231303204 has 36 divisors (see below), whose sum is σ = 637837200. Its totient is φ = 70091760.

The previous prime is 231303199. The next prime is 231303221. The reversal of 231303204 is 402303132.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291654 + ... + 292445.

It is an arithmetic number, because the mean of its divisors is an integer number (17717700).

Almost surely, 2^231303204 is an apocalyptic number.

It is an amenable number.

231303204 is an abundant number, since it is smaller than the sum of its proper divisors (406533996).

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

231303204 is a wasteful number, since it uses less digits than its factorization.

231303204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584120 (or 584115 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 231303204 is about 15208.6555618832. The cubic root of 231303204 is about 613.8475821243.

Adding to 231303204 its reverse (402303132), we get a palindrome (633606336).

The spelling of 231303204 in words is "two hundred thirty-one million, three hundred three thousand, two hundred four".