231868184331 has 16 divisors (see below), whose sum is σ = 371918892800. Its totient is φ = 125522625888.

The previous prime is 231868184291. The next prime is 231868184441. The reversal of 231868184331 is 133481868132.

It is not a de Polignac number, because 231868184331 - 2⁷ = 231868184203 is a prime.

It is a super-2 number, since 2×231868184331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231868184231) 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, 290561236 + ... + 290562033.

It is an arithmetic number, because the mean of its divisors is an integer number (23244930800).

Almost surely, 2^231868184331 is an apocalyptic number.

231868184331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231868184331 is a deficient number, since it is larger than the sum of its proper divisors (140050708469).

231868184331 is a wasteful number, since it uses less digits than its factorization.

231868184331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581123298.

The product of its digits is 663552, while the sum is 48.

The spelling of 231868184331 in words is "two hundred thirty-one billion, eight hundred sixty-eight million, one hundred eighty-four thousand, three hundred thirty-one".