231996368 has 20 divisors (see below), whose sum is σ = 460457508. Its totient is φ = 113168640.

The previous prime is 231996367. The next prime is 231996379. The reversal of 231996368 is 863699132.

It can be written as a sum of positive squares in 2 ways, for example, as 3139984 + 228856384 = 1772^2 + 15128^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231996367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176171 + ... + 177482.

Almost surely, 2^231996368 is an apocalyptic number.

It is an amenable number.

231996368 is a deficient number, since it is larger than the sum of its proper divisors (228461140).

231996368 is a wasteful number, since it uses less digits than its factorization.

231996368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353702 (or 353696 counting only the distinct ones).

The product of its digits is 419904, while the sum is 47.

The square root of 231996368 is about 15231.4269850201. The cubic root of 231996368 is about 614.4601586105.

The spelling of 231996368 in words is "two hundred thirty-one million, nine hundred ninety-six thousand, three hundred sixty-eight".