231332304 has 80 divisors (see below), whose sum is σ = 706561920. Its totient is φ = 63813120.

The previous prime is 231332287. The next prime is 231332329. The reversal of 231332304 is 403233132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2127 + ... + 21614.

It is an arithmetic number, because the mean of its divisors is an integer number (8832024).

Almost surely, 2^231332304 is an apocalyptic number.

231332304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231332304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353280960).

231332304 is an abundant number, since it is smaller than the sum of its proper divisors (475229616).

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

231332304 is a wasteful number, since it uses less digits than its factorization.

231332304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23788 (or 23782 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 231332304 is about 15209.6122238537. The cubic root of 231332304 is about 613.8733235398.

Adding to 231332304 its reverse (403233132), we get a palindrome (634565436).

The spelling of 231332304 in words is "two hundred thirty-one million, three hundred thirty-two thousand, three hundred four".