231528832 has 128 divisors (see below), whose sum is σ = 520934400. Its totient is φ = 102021120.

The previous prime is 231528821. The next prime is 231528853. The reversal of 231528832 is 238825132.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2789463 + ... + 2789545.

It is an arithmetic number, because the mean of its divisors is an integer number (4069800).

Almost surely, 2^231528832 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 231528832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260467200).

231528832 is an abundant number, since it is smaller than the sum of its proper divisors (289405568).

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

231528832 is a wasteful number, since it uses less digits than its factorization.

231528832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 172 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 231528832 is about 15216.0715035123. The cubic root of 231528832 is about 614.0471127115.

The spelling of 231528832 in words is "two hundred thirty-one million, five hundred twenty-eight thousand, eight hundred thirty-two".