231556968 has 80 divisors (see below), whose sum is σ = 662460480. Its totient is φ = 75533472.

The previous prime is 231556957. The next prime is 231556987. The reversal of 231556968 is 869655132.

231556968 is a `hidden beast` number, since 2 + 3 + 1 + 556 + 96 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26655 + ... + 34257.

It is an arithmetic number, because the mean of its divisors is an integer number (8280756).

Almost surely, 2^231556968 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 231556968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331230240).

231556968 is an abundant number, since it is smaller than the sum of its proper divisors (430903512).

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

231556968 is a wasteful number, since it uses less digits than its factorization.

231556968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7668 (or 7655 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 231556968 is about 15216.9960241830. The cubic root of 231556968 is about 614.0719852506.

The spelling of 231556968 in words is "two hundred thirty-one million, five hundred fifty-six thousand, nine hundred sixty-eight".