231304032 has 48 divisors (see below), whose sum is σ = 674639280. Its totient is φ = 77101056.

The previous prime is 231304019. The next prime is 231304049. The reversal of 231304032 is 230403132.

231304032 is a `hidden beast` number, since 231 + 30 + 403 + 2 = 666.

231304032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 231303996 and 231304014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132993 + ... + 134720.

It is an arithmetic number, because the mean of its divisors is an integer number (14054985).

Almost surely, 2^231304032 is an apocalyptic number.

It is an amenable number.

231304032 is an abundant number, since it is smaller than the sum of its proper divisors (443335248).

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

231304032 is a wasteful number, since it uses less digits than its factorization.

231304032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267732 (or 267718 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 231304032 is about 15208.6827831999. The cubic root of 231304032 is about 613.8483145903.

Adding to 231304032 its reverse (230403132), we get a palindrome (461707164).

The spelling of 231304032 in words is "two hundred thirty-one million, three hundred four thousand, thirty-two".