231239632 has 40 divisors (see below), whose sum is σ = 483406560. Its totient is φ = 106523520.

The previous prime is 231239629. The next prime is 231239647. The reversal of 231239632 is 236932132.

It is a junction number, because it is equal to n+sod(n) for n = 231239594 and 231239603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211407 + ... + 212497.

It is an arithmetic number, because the mean of its divisors is an integer number (12085164).

Almost surely, 2^231239632 is an apocalyptic number.

It is an amenable number.

231239632 is an abundant number, since it is smaller than the sum of its proper divisors (252166928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231239632 is a wasteful number, since it uses less digits than its factorization.

231239632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131 (or 2125 counting only the distinct ones).

The product of its digits is 11664, while the sum is 31.

The square root of 231239632 is about 15206.5654241844. The cubic root of 231239632 is about 613.7913397933.

The spelling of 231239632 in words is "two hundred thirty-one million, two hundred thirty-nine thousand, six hundred thirty-two".