231988056 has 16 divisors (see below), whose sum is σ = 579970200. Its totient is φ = 77329344.

The previous prime is 231988037. The next prime is 231988061. The reversal of 231988056 is 650889132.

It is a junction number, because it is equal to n+sod(n) for n = 231987999 and 231988017.

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 3 ways as a sum of consecutive naturals, for example, 4833061 + ... + 4833108.

Almost surely, 2^231988056 is an apocalyptic number.

It is an amenable number.

231988056 is an abundant number, since it is smaller than the sum of its proper divisors (347982144).

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

231988056 is a wasteful number, since it uses less digits than its factorization.

231988056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9666178 (or 9666174 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 231988056 is about 15231.1541256728. The cubic root of 231988056 is about 614.4528201998.

The spelling of 231988056 in words is "two hundred thirty-one million, nine hundred eighty-eight thousand, fifty-six".