231312113097 has 16 divisors (see below), whose sum is σ = 332167644480. Its totient is φ = 142334269632.

The previous prime is 231312113093. The next prime is 231312113173. The reversal of 231312113097 is 790311213132.

It is not a de Polignac number, because 231312113097 - 2² = 231312113093 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231312113093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252979 + ... + 725687.

It is an arithmetic number, because the mean of its divisors is an integer number (20760477780).

Almost surely, 2^231312113097 is an apocalyptic number.

It is an amenable number.

231312113097 is a deficient number, since it is larger than the sum of its proper divisors (100855531383).

231312113097 is a wasteful number, since it uses less digits than its factorization.

231312113097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485272.

The product of its (nonzero) digits is 6804, while the sum is 33.

The spelling of 231312113097 in words is "two hundred thirty-one billion, three hundred twelve million, one hundred thirteen thousand, ninety-seven".