115431232131 has 6 divisors (see below), whose sum is σ = 166734001980. Its totient is φ = 76954154748.

The previous prime is 115431232117. The next prime is 115431232159. The reversal of 115431232131 is 131232134511.

115431232131 is a `hidden beast` number, since 1 + 15 + 431 + 2 + 3 + 213 + 1 = 666.

It is not a de Polignac number, because 115431232131 - 2²⁶ = 115364123267 is a prime.

It is a super-2 number, since 2×115431232131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115431232095 and 115431232104.

It is not an unprimeable number, because it can be changed into a prime (115431232031) 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 in 5 ways as a sum of consecutive naturals, for example, 6412846221 + ... + 6412846238.

It is an arithmetic number, because the mean of its divisors is an integer number (27789000330).

Almost surely, 2^115431232131 is an apocalyptic number.

115431232131 is a deficient number, since it is larger than the sum of its proper divisors (51302769849).

115431232131 is a wasteful number, since it uses less digits than its factorization.

115431232131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12825692465 (or 12825692462 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

Adding to 115431232131 its reverse (131232134511), we get a palindrome (246663366642).

The spelling of 115431232131 in words is "one hundred fifteen billion, four hundred thirty-one million, two hundred thirty-two thousand, one hundred thirty-one".