231908832 has 240 divisors, whose sum is σ = 762909840. Its totient is φ = 68677632.

The previous prime is 231908821. The next prime is 231908863. The reversal of 231908832 is 238809132.

It is a happy number.

231908832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 837078 + ... + 837354.

It is an arithmetic number, because the mean of its divisors is an integer number (3178791).

Almost surely, 2^231908832 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 231908832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381454920).

231908832 is an abundant number, since it is smaller than the sum of its proper divisors (531001008).

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

231908832 is a wasteful number, since it uses less digits than its factorization.

231908832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 231908832 is about 15228.5531814418. The cubic root of 231908832 is about 614.3828669539.

The spelling of 231908832 in words is "two hundred thirty-one million, nine hundred eight thousand, eight hundred thirty-two".