231251132 has 12 divisors (see below), whose sum is σ = 462502320. Its totient is φ = 99107616.

The previous prime is 231251117. The next prime is 231251143. The reversal of 231251132 is 231152132.

231251132 is an admirable number.

It is a congruent number.

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, 4129457 + ... + 4129512.

It is an arithmetic number, because the mean of its divisors is an integer number (38541860).

Almost surely, 2^231251132 is an apocalyptic number.

It is an amenable number.

231251132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

231251132 is a wasteful number, since it uses less digits than its factorization.

231251132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258980 (or 8258978 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 231251132 is about 15206.9435456307. The cubic root of 231251132 is about 613.8015146399.

The spelling of 231251132 in words is "two hundred thirty-one million, two hundred fifty-one thousand, one hundred thirty-two".