231231968 has 96 divisors (see below), whose sum is σ = 514654560. Its totient is φ = 102220800.

The previous prime is 231231947. The next prime is 231231971. The reversal of 231231968 is 869132132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2598068 + ... + 2598156.

It is an arithmetic number, because the mean of its divisors is an integer number (5360985).

Almost surely, 2^231231968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231231968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257327280).

231231968 is an abundant number, since it is smaller than the sum of its proper divisors (283422592).

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

231231968 is an equidigital number, since it uses as much as digits as its factorization.

231231968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 163 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 231231968 is about 15206.3134256795. The cubic root of 231231968 is about 613.7845587342.

The spelling of 231231968 in words is "two hundred thirty-one million, two hundred thirty-one thousand, nine hundred sixty-eight".