Nearby Numbers

Positive, nonzero integers within three units

21128

Twenty-One Thousand One Hundred and Twenty-Eight

21129

Twenty-One Thousand One Hundred and Twenty-Nine

21130

Twenty-One Thousand One Hundred and Thirty

21132

Twenty-One Thousand One Hundred and Thirty-Two

21133

Twenty-One Thousand One Hundred and Thirty-Three

21134

Twenty-One Thousand One Hundred and Thirty-Four

Scientific Notation

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

2.1131e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000047323837016705316

The reciprocal of 21131.

Palindrome?

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

The number 21131 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 one hundred and thirty-one is a composite number with 8 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand one hundred and thirty-one is a composite number with 8 total factors (including 1 and itself).

Prime Factors

11

Eleven

17

Seventeen

113

One Hundred and Thirteen

Prime Factorization

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

111 · 171 · 1131 = 21131

Base Conversions

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