The Number

81009

Eighty-One Thousand and Nine

In Base 31 Untrigesimal Is

2m9631

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

For more familiar numbers: See Eighty-One Thousand and Nine in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

81006
2m9331
Eighty-One Thousand and Six in Base 31 Untrigesimal
81007
2m9431
Eighty-One Thousand and Seven in Base 31 Untrigesimal
81008
2m9531
Eighty-One Thousand and Eight in Base 31 Untrigesimal
81010
2m9731
Eighty-One Thousand and Ten in Base 31 Untrigesimal
81011
2m9831
Eighty-One Thousand and Eleven in Base 31 Untrigesimal
81012
2m9931
Eighty-One Thousand and Twelve in Base 31 Untrigesimal

Scientific Notation

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

8.1009e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000bccj552o20k31

The reciprocal of 81009 in Base 31 Untrigesimal.

Palindrome?

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

The number 2m9631 is not a palindrome.

Not A Prime Number

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

Eighty-one thousand and nine is a composite number with 6 total factors (including 1 and itself).   See primes in Base 31 Untrigesimal

A Composite

Composites have more than just these two factors.

Eighty-one thousand and nine is a composite number with 6 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 eighty-one thousand and nine has the following 2 prime factors:

3
331
Three in Base 31 Untrigesimal
9001
9bb31
Nine Thousand and One 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 · 9bb311 = 2m9631

Base Conversions

The number eighty-one thousand and nine in 35 different bases