231996384 has 72 divisors (see below), whose sum is σ = 694479240. Its totient is φ = 73260288.

The previous prime is 231996379. The next prime is 231996407. The reversal of 231996384 is 483699132.

It is a happy number.

231996384 is a `hidden beast` number, since 2 + 3 + 1 + 9 + 9 + 638 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15727 + ... + 26670.

It is an arithmetic number, because the mean of its divisors is an integer number (9645545).

Almost surely, 2^231996384 is an apocalyptic number.

231996384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231996384 is an abundant number, since it is smaller than the sum of its proper divisors (462482856).

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

231996384 is a wasteful number, since it uses less digits than its factorization.

231996384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42432 (or 42421 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 231996384 is about 15231.4275102500. The cubic root of 231996384 is about 614.4601727362.

The spelling of 231996384 in words is "two hundred thirty-one million, nine hundred ninety-six thousand, three hundred eighty-four".