The Number

31998

Thirty-One Thousand Nine Hundred and Ninety-Eight

In Base 21 Unovigesimal Is

39bf21

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See Thirty-One Thousand Nine Hundred and Ninety-Eight in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

31995
39bc21
Thirty-One Thousand Nine Hundred and Ninety-Five in Base 21 Unovigesimal
31996
39bd21
Thirty-One Thousand Nine Hundred and Ninety-Six in Base 21 Unovigesimal
31997
39be21
Thirty-One Thousand Nine Hundred and Ninety-Seven in Base 21 Unovigesimal
31999
39bg21
Thirty-One Thousand Nine Hundred and Ninety-Nine in Base 21 Unovigesimal
32000
39bh21
Thirty-Two Thousand in Base 21 Unovigesimal
32001
39bi21
Thirty-Two Thousand and One in Base 21 Unovigesimal

Scientific Notation

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

3.1998e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00061d7b4ia98j921

The reciprocal of 31998 in Base 21 Unovigesimal.

Palindrome?

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

The number 39bf21 is not a palindrome.

Not A Prime Number

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

Thirty-one thousand nine hundred and ninety-eight is a composite number with 8 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Thirty-one thousand nine hundred and ninety-eight is a composite number with 8 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 thirty-one thousand nine hundred and ninety-eight has the following 3 prime factors:

2
221
Two in Base 21 Unovigesimal
3
321
Three in Base 21 Unovigesimal
5333
c1k21
Five Thousand Three Hundred and Thirty-Three in Base 21 Unovigesimal

Prime Factorization

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

2211 · 3211 · c1k211 = 39bf21

Base Conversions

The number thirty-one thousand nine hundred and ninety-eight in 35 different bases