113131331 has 2 divisors, whose sum is σ = 113131332. Its totient is φ = 113131330.

The previous prime is 113131321. The next prime is 113131351. The reversal of 113131331 is 133131311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113131331 - 2²² = 108937027 is a prime.

It is a super-2 number, since 2×113131331² = 25597396107663122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113131321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56565665 + 56565666.

It is an arithmetic number, because the mean of its divisors is an integer number (56565666).

Almost surely, 2^113131331 is an apocalyptic number.

113131331 is a deficient number, since it is larger than the sum of its proper divisors (1).

113131331 is an equidigital number, since it uses as much as digits as its factorization.

113131331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81, while the sum is 17.

The square root of 113131331 is about 10636.3213095506. The cubic root of 113131331 is about 483.6460355652.

Adding to 113131331 its reverse (133131311), we get a palindrome (246262642).

The spelling of 113131331 in words is "one hundred thirteen million, one hundred thirty-one thousand, three hundred thirty-one".