The Number

21861

Twenty-One Thousand Eight Hundred and Sixty-One

In Base 31 Untrigesimal Is

mn631

The numbers with a 31 subscript use Base 31 Untrigesimal notation.

For more familiar numbers: See Twenty-One Thousand Eight Hundred and Sixty-One in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

21858
mn331
Twenty-One Thousand Eight Hundred and Fifty-Eight in Base 31 Untrigesimal
21859
mn431
Twenty-One Thousand Eight Hundred and Fifty-Nine in Base 31 Untrigesimal
21860
mn531
Twenty-One Thousand Eight Hundred and Sixty in Base 31 Untrigesimal
21862
mn731
Twenty-One Thousand Eight Hundred and Sixty-Two in Base 31 Untrigesimal
21863
mn831
Twenty-One Thousand Eight Hundred and Sixty-Three in Base 31 Untrigesimal
21864
mn931
Twenty-One Thousand Eight Hundred and Sixty-Four in Base 31 Untrigesimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

2.1861e4

Reciprocal

A number multiplied with its reciprocal is one.

0.001b7ihtlpdt6f31

The reciprocal of 21861 in Base 31 Untrigesimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number mn631 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Twenty-one thousand eight hundred and sixty-one is a composite number with 12 total factors (including 1 and itself).   See primes in Base 31 Untrigesimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand eight hundred and sixty-one is a composite number with 12 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number twenty-one thousand eight hundred and sixty-one has the following 3 prime factors:

3
331
Three in Base 31 Untrigesimal
7
731
Seven in Base 31 Untrigesimal
347
b631
Three Hundred and Forty-Seven in Base 31 Untrigesimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

3312 · 7311 · b6311 = mn631

Base Conversions

The number twenty-one thousand eight hundred and sixty-one in 35 different bases