231404504 has 8 divisors (see below), whose sum is σ = 433883460. Its totient is φ = 115702248.

The previous prime is 231404501. The next prime is 231404531. The reversal of 231404504 is 405404132.

231404504 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 231404504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231404501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14462774 + ... + 14462789.

Almost surely, 2^231404504 is an apocalyptic number.

It is an amenable number.

231404504 is a deficient number, since it is larger than the sum of its proper divisors (202478956).

231404504 is a wasteful number, since it uses less digits than its factorization.

231404504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28925569 (or 28925565 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 231404504 is about 15211.9855377265. The cubic root of 231404504 is about 613.9371812357.

Adding to 231404504 its reverse (405404132), we get a palindrome (636808636).

The spelling of 231404504 in words is "two hundred thirty-one million, four hundred four thousand, five hundred four".