231304432 has 20 divisors (see below), whose sum is σ = 448469560. Its totient is φ = 115570368.

The previous prime is 231304421. The next prime is 231304433. The reversal of 231304432 is 234403132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231304433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22819 + ... + 31357.

It is an arithmetic number, because the mean of its divisors is an integer number (22423478).

Almost surely, 2^231304432 is an apocalyptic number.

It is an amenable number.

231304432 is a deficient number, since it is larger than the sum of its proper divisors (217165128).

231304432 is a wasteful number, since it uses less digits than its factorization.

231304432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10240 (or 10234 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 231304432 is about 15208.6959335769. The cubic root of 231304432 is about 613.8486684380.

Adding to 231304432 its reverse (234403132), we get a palindrome (465707564).

The spelling of 231304432 in words is "two hundred thirty-one million, three hundred four thousand, four hundred thirty-two".