115532431231 has 12 divisors (see below), whose sum is σ = 139029176520. Its totient is φ = 95613045360.

The previous prime is 115532431199. The next prime is 115532431237. The reversal of 115532431231 is 132134235511.

It is not a de Polignac number, because 115532431231 - 2⁵ = 115532431199 is a prime.

It is a super-2 number, since 2×115532431231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115532431193 and 115532431202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115532431237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40650385 + ... + 40653226.

It is an arithmetic number, because the mean of its divisors is an integer number (11585764710).

Almost surely, 2^115532431231 is an apocalyptic number.

115532431231 is a deficient number, since it is larger than the sum of its proper divisors (23496745289).

115532431231 is an equidigital number, since it uses as much as digits as its factorization.

115532431231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81303654 (or 81303647 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

Adding to 115532431231 its reverse (132134235511), we get a palindrome (247666666742).

The spelling of 115532431231 in words is "one hundred fifteen billion, five hundred thirty-two million, four hundred thirty-one thousand, two hundred thirty-one".