231530504 has 32 divisors (see below), whose sum is σ = 460080000. Its totient is φ = 108925632.

The previous prime is 231530501. The next prime is 231530513. The reversal of 231530504 is 405035132.

It is a self number, because there is not a number n which added to its sum of digits gives 231530504.

It is not an unprimeable number, because it can be changed into a prime (231530501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17537 + ... + 27759.

It is an arithmetic number, because the mean of its divisors is an integer number (14377500).

Almost surely, 2^231530504 is an apocalyptic number.

It is an amenable number.

231530504 is a deficient number, since it is larger than the sum of its proper divisors (228549496).

231530504 is a wasteful number, since it uses less digits than its factorization.

231530504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10397 (or 10393 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 231530504 is about 15216.1264453211. The cubic root of 231530504 is about 614.0485908346.

Adding to 231530504 its reverse (405035132), we get a palindrome (636565636).

The spelling of 231530504 in words is "two hundred thirty-one million, five hundred thirty thousand, five hundred four".