113161686931 has 2 divisors, whose sum is σ = 113161686932. Its totient is φ = 113161686930.

The previous prime is 113161686929. The next prime is 113161686961. The reversal of 113161686931 is 139686161311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113161686931 - 2¹ = 113161686929 is a prime.

It is a super-2 number, since 2×113161686931² (a number of 23 digits) contains 22 as substring.

Together with 113161686929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (113161686961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56580843465 + 56580843466.

It is an arithmetic number, because the mean of its divisors is an integer number (56580843466).

Almost surely, 2^113161686931 is an apocalyptic number.

113161686931 is a deficient number, since it is larger than the sum of its proper divisors (1).

113161686931 is an equidigital number, since it uses as much as digits as its factorization.

113161686931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 46.

The spelling of 113161686931 in words is "one hundred thirteen billion, one hundred sixty-one million, six hundred eighty-six thousand, nine hundred thirty-one".