231766864 has 60 divisors (see below), whose sum is σ = 549890400. Its totient is φ = 94094784.

The previous prime is 231766859. The next prime is 231766901. The reversal of 231766864 is 468667132.

231766864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231766864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7117 + ... + 22675.

It is an arithmetic number, because the mean of its divisors is an integer number (9164840).

Almost surely, 2^231766864 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 231766864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274945200).

231766864 is an abundant number, since it is smaller than the sum of its proper divisors (318123536).

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

231766864 is a wasteful number, since it uses less digits than its factorization.

231766864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15600 (or 15587 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 231766864 is about 15223.8912239939. The cubic root of 231766864 is about 614.2574721158.

The spelling of 231766864 in words is "two hundred thirty-one million, seven hundred sixty-six thousand, eight hundred sixty-four".