231404304 has 20 divisors (see below), whose sum is σ = 597794576. Its totient is φ = 77134752.

The previous prime is 231404279. The next prime is 231404317. The reversal of 231404304 is 403404132.

231404304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2410414 + ... + 2410509.

Almost surely, 2^231404304 is an apocalyptic number.

231404304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231404304 is an abundant number, since it is smaller than the sum of its proper divisors (366390272).

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

231404304 is a wasteful number, since it uses less digits than its factorization.

231404304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4820934 (or 4820928 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 231404304 is about 15211.9789639613. The cubic root of 231404304 is about 613.9370043629.

Adding to 231404304 its reverse (403404132), we get a palindrome (634808436).

The spelling of 231404304 in words is "two hundred thirty-one million, four hundred four thousand, three hundred four".