231012304 has 20 divisors (see below), whose sum is σ = 447934500. Its totient is φ = 115416320.

The previous prime is 231012283. The next prime is 231012367. The reversal of 231012304 is 403210132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63361600 + 167650704 = 7960^2 + 12948^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18822 + ... + 28570.

It is an arithmetic number, because the mean of its divisors is an integer number (22396725).

Almost surely, 2^231012304 is an apocalyptic number.

It is an amenable number.

231012304 is a deficient number, since it is larger than the sum of its proper divisors (216922196).

231012304 is a wasteful number, since it uses less digits than its factorization.

231012304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11238 (or 11232 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231012304 is about 15199.0889200636. The cubic root of 231012304 is about 613.5901376819.

Adding to 231012304 its reverse (403210132), we get a palindrome (634222436).

The spelling of 231012304 in words is "two hundred thirty-one million, twelve thousand, three hundred four".