231931044828 has 72 divisors (see below), whose sum is σ = 673724935520. Its totient is φ = 65899889280.

The previous prime is 231931044769. The next prime is 231931044841. The reversal of 231931044828 is 828440139132.

231931044828 is a `hidden beast` number, since 2 + 3 + 193 + 10 + 448 + 2 + 8 = 666.

It is a super-5 number, since 5×231931044828⁵ (a number of 58 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2496823 + ... + 2588046.

Almost surely, 2^231931044828 is an apocalyptic number.

231931044828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231931044828 is an abundant number, since it is smaller than the sum of its proper divisors (441793890692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231931044828 is a wasteful number, since it uses less digits than its factorization.

231931044828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085067 (or 5085062 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 231931044828 in words is "two hundred thirty-one billion, nine hundred thirty-one million, forty-four thousand, eight hundred twenty-eight".