231313112331 has 16 divisors (see below), whose sum is σ = 363847354368. Its totient is φ = 127915084800.

The previous prime is 231313112321. The next prime is 231313112333. The reversal of 231313112331 is 133211313132.

It is not a de Polignac number, because 231313112331 - 2⁹ = 231313111819 is a prime.

It is a super-2 number, since 2×231313112331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231313112333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177659190 + ... + 177660491.

It is an arithmetic number, because the mean of its divisors is an integer number (22740459648).

Almost surely, 2^231313112331 is an apocalyptic number.

231313112331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231313112331 is a deficient number, since it is larger than the sum of its proper divisors (132534242037).

231313112331 is a wasteful number, since it uses less digits than its factorization.

231313112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355319722.

The product of its digits is 972, while the sum is 24.

Adding to 231313112331 its reverse (133211313132), we get a palindrome (364524425463).

The spelling of 231313112331 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred twelve thousand, three hundred thirty-one".