231311204 has 12 divisors (see below), whose sum is σ = 405045564. Its totient is φ = 115583904.

The previous prime is 231311203. The next prime is 231311219. The reversal of 231311204 is 402113132.

231311204 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 134328100 + 96983104 = 11590^2 + 9848^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231311203) 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, 10307 + ... + 23850.

It is an arithmetic number, because the mean of its divisors is an integer number (33753797).

Almost surely, 2^231311204 is an apocalyptic number.

It is an amenable number.

231311204 is a deficient number, since it is larger than the sum of its proper divisors (173734360).

231311204 is a wasteful number, since it uses less digits than its factorization.

231311204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35854 (or 35852 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231311204 is about 15208.9185677352. The cubic root of 231311204 is about 613.8546590173.

Adding to 231311204 its reverse (402113132), we get a palindrome (633424336).

The spelling of 231311204 in words is "two hundred thirty-one million, three hundred eleven thousand, two hundred four".