231230992 has 20 divisors (see below), whose sum is σ = 455356396. Its totient is φ = 113719680.

The previous prime is 231230963. The next prime is 231231017. The reversal of 231230992 is 299032132.

It is a happy number.

231230992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41783296 + 189447696 = 6464^2 + 13764^2 .

It is a super-2 number, since 2×231230992² = 106935543322608128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117483 + ... + 119434.

Almost surely, 2^231230992 is an apocalyptic number.

It is an amenable number.

231230992 is a deficient number, since it is larger than the sum of its proper divisors (224125404).

231230992 is a wasteful number, since it uses less digits than its factorization.

231230992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236986 (or 236980 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 231230992 is about 15206.2813337121. The cubic root of 231230992 is about 613.7836951648.

The spelling of 231230992 in words is "two hundred thirty-one million, two hundred thirty thousand, nine hundred ninety-two".