231331204 has 12 divisors (see below), whose sum is σ = 435970444. Its totient is φ = 106768224.

The previous prime is 231331201. The next prime is 231331211. The reversal of 231331204 is 402133132.

231331204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39564100 + 191767104 = 6290^2 + 13848^2 .

It is not an unprimeable number, because it can be changed into a prime (231331201) 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, 2224287 + ... + 2224390.

Almost surely, 2^231331204 is an apocalyptic number.

It is an amenable number.

231331204 is a deficient number, since it is larger than the sum of its proper divisors (204639240).

231331204 is a wasteful number, since it uses less digits than its factorization.

231331204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448694 (or 4448692 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231331204 is about 15209.5760624680. The cubic root of 231331204 is about 613.8723505358.

Adding to 231331204 its reverse (402133132), we get a palindrome (633464336).

The spelling of 231331204 in words is "two hundred thirty-one million, three hundred thirty-one thousand, two hundred four".