231021204 has 48 divisors (see below), whose sum is σ = 549276672. Its totient is φ = 75559392.

The previous prime is 231021191. The next prime is 231021227. The reversal of 231021204 is 402120132.

231021204 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161637 + ... + 163059.

It is an arithmetic number, because the mean of its divisors is an integer number (11443264).

Almost surely, 2^231021204 is an apocalyptic number.

It is an amenable number.

231021204 is an abundant number, since it is smaller than the sum of its proper divisors (318255468).

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

231021204 is a wasteful number, since it uses less digits than its factorization.

231021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 231021204 is about 15199.3816979507. The cubic root of 231021204 is about 613.5980173229.

Adding to 231021204 its reverse (402120132), we get a palindrome (633141336).

The spelling of 231021204 in words is "two hundred thirty-one million, twenty-one thousand, two hundred four".