The Number

31087

Thirty-One Thousand and Eighty-Seven

In Base 11 Undecimal Is

213a111

The numbers with a 11 subscript use Base 11 Undecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

31084
2139911
Thirty-One Thousand and Eighty-Four in Base 11 Undecimal
31085
2139a11
Thirty-One Thousand and Eighty-Five in Base 11 Undecimal
31086
213a011
Thirty-One Thousand and Eighty-Six in Base 11 Undecimal
31088
213a211
Thirty-One Thousand and Eighty-Eight in Base 11 Undecimal
31089
213a311
Thirty-One Thousand and Eighty-Nine in Base 11 Undecimal
31090
213a411
Thirty-One Thousand and Ninety in Base 11 Undecimal

Scientific Notation

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

3.1087e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000051a94a61106133a611

The reciprocal of 31087 in Base 11 Undecimal.

Palindrome?

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

The number 213a111 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 and eighty-seven is a composite number with 4 total factors (including 1 and itself).   See primes in Base 11 Undecimal

A Composite

Composites have more than just these two factors.

Thirty-one thousand and eighty-seven is a composite number with 4 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 and eighty-seven has the following 2 prime factors:

7
711
Seven in Base 11 Undecimal
4441
337811
Four Thousand Four Hundred and Forty-One in Base 11 Undecimal

Prime Factorization

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

7111 · 3378111 = 213a111

Base Conversions

The number thirty-one thousand and eighty-seven in 35 different bases