231005912 has 16 divisors (see below), whose sum is σ = 433483800. Its totient is φ = 115410240.

The previous prime is 231005903. The next prime is 231005917. The reversal of 231005912 is 219500132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231005917) 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, 362 + ... + 21497.

Almost surely, 2^231005912 is an apocalyptic number.

It is an amenable number.

231005912 is a deficient number, since it is larger than the sum of its proper divisors (202477888).

231005912 is a wasteful number, since it uses less digits than its factorization.

231005912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23186 (or 23182 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 231005912 is about 15198.8786428473. The cubic root of 231005912 is about 613.5844783811.

The spelling of 231005912 in words is "two hundred thirty-one million, five thousand, nine hundred twelve".