113311431172931 has 2 divisors, whose sum is σ = 113311431172932. Its totient is φ = 113311431172930.

The previous prime is 113311431172909. The next prime is 113311431173011. The reversal of 113311431172931 is 139271134113311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113311431172931 - 2²² = 113311426978627 is a prime.

It is a super-2 number, since 2×113311431172931² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113311431172031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56655715586465 + 56655715586466.

It is an arithmetic number, because the mean of its divisors is an integer number (56655715586466).

Almost surely, 2^{113311431172931} is an apocalyptic number.

113311431172931 is a deficient number, since it is larger than the sum of its proper divisors (1).

113311431172931 is an equidigital number, since it uses as much as digits as its factorization.

113311431172931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 41.

The spelling of 113311431172931 in words is "one hundred thirteen trillion, three hundred eleven billion, four hundred thirty-one million, one hundred seventy-two thousand, nine hundred thirty-one".