231307252 has 24 divisors (see below), whose sum is σ = 443822400. Its totient is φ = 104607360.

The previous prime is 231307229. The next prime is 231307261. The reversal of 231307252 is 252703132.

231307252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 4453 + ... + 21964.

It is an arithmetic number, because the mean of its divisors is an integer number (18492600).

Almost surely, 2^231307252 is an apocalyptic number.

231307252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231307252 is a deficient number, since it is larger than the sum of its proper divisors (212515148).

231307252 is a wasteful number, since it uses less digits than its factorization.

231307252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26631 (or 26629 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 231307252 is about 15208.7886434127. The cubic root of 231307252 is about 613.8511630526.

The spelling of 231307252 in words is "two hundred thirty-one million, three hundred seven thousand, two hundred fifty-two".