231820492 has 6 divisors (see below), whose sum is σ = 405685868. Its totient is φ = 115910244.

The previous prime is 231820471. The next prime is 231820493. The reversal of 231820492 is 294028132.

231820492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231820492² = 107481481022244128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231820493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28977558 + ... + 28977565.

Almost surely, 2^231820492 is an apocalyptic number.

It is an amenable number.

231820492 is a deficient number, since it is larger than the sum of its proper divisors (173865376).

231820492 is a wasteful number, since it uses less digits than its factorization.

231820492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57955127 (or 57955125 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 231820492 is about 15225.6524326546. The cubic root of 231820492 is about 614.3048456686.

The spelling of 231820492 in words is "two hundred thirty-one million, eight hundred twenty thousand, four hundred ninety-two".