115891273931 has 2 divisors, whose sum is σ = 115891273932. Its totient is φ = 115891273930.

The previous prime is 115891273919. The next prime is 115891273987. The reversal of 115891273931 is 139372198511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115891273931 - 2³⁰ = 114817532107 is a prime.

It is a super-2 number, since 2×115891273931² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115891273931.

It is not a weakly prime, because it can be changed into another prime (115891275931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57945636965 + 57945636966.

It is an arithmetic number, because the mean of its divisors is an integer number (57945636966).

Almost surely, 2^115891273931 is an apocalyptic number.

115891273931 is a deficient number, since it is larger than the sum of its proper divisors (1).

115891273931 is an equidigital number, since it uses as much as digits as its factorization.

115891273931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 50.

The spelling of 115891273931 in words is "one hundred fifteen billion, eight hundred ninety-one million, two hundred seventy-three thousand, nine hundred thirty-one".