231992 has 16 divisors (see below), whose sum is σ = 444960. Its totient is φ = 113344.

The previous prime is 231967. The next prime is 232003. The reversal of 231992 is 299132.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 231992.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68 + ... + 684.

It is an arithmetic number, because the mean of its divisors is an integer number (27810).

2²³¹⁹⁹² is an apocalyptic number.

It is an amenable number.

231992 is a deficient number, since it is larger than the sum of its proper divisors (212968).

231992 is a wasteful number, since it uses less digits than its factorization.

231992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 666 counting only the distinct ones).

The product of its digits is 972, while the sum is 26.

The square root of 231992 is about 481.6554785321. The cubic root of 231992 is about 61.4456302259.

The spelling of 231992 in words is "two hundred thirty-one thousand, nine hundred ninety-two".