231131232319 has 32 divisors (see below), whose sum is σ = 265827744000. Its totient is φ = 199199948544.

The previous prime is 231131232287. The next prime is 231131232359. The reversal of 231131232319 is 913232131132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 231131232319 - 2⁵ = 231131232287 is a prime.

It is a super-2 number, since 2×231131232319² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231131232359) 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 31 ways as a sum of consecutive naturals, for example, 4679052 + ... + 4728190.

It is an arithmetic number, because the mean of its divisors is an integer number (8307117000).

Almost surely, 2^231131232319 is an apocalyptic number.

231131232319 is a deficient number, since it is larger than the sum of its proper divisors (34696511681).

231131232319 is a wasteful number, since it uses less digits than its factorization.

231131232319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49447.

The product of its digits is 5832, while the sum is 31.

The spelling of 231131232319 in words is "two hundred thirty-one billion, one hundred thirty-one million, two hundred thirty-two thousand, three hundred nineteen".