231021304 has 32 divisors (see below), whose sum is σ = 457776000. Its totient is φ = 108996192.

The previous prime is 231021283. The next prime is 231021317. The reversal of 231021304 is 403120132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37087 + ... + 42865.

It is an arithmetic number, because the mean of its divisors is an integer number (14305500).

Almost surely, 2^231021304 is an apocalyptic number.

It is an amenable number.

231021304 is a deficient number, since it is larger than the sum of its proper divisors (226754696).

231021304 is a wasteful number, since it uses less digits than its factorization.

231021304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067 (or 6063 counting only the distinct ones).

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

The square root of 231021304 is about 15199.3849875579. The cubic root of 231021304 is about 613.5981058571.

Adding to 231021304 its reverse (403120132), we get a palindrome (634141436).

The spelling of 231021304 in words is "two hundred thirty-one million, twenty-one thousand, three hundred four".