531323240504 has 64 divisors (see below), whose sum is σ = 1142337600000. Its totient is φ = 226953687168.

The previous prime is 531323240491. The next prime is 531323240519. The reversal of 531323240504 is 405042323135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20750942 + ... + 20776530.

It is an arithmetic number, because the mean of its divisors is an integer number (17849025000).

Almost surely, 2^531323240504 is an apocalyptic number.

It is an amenable number.

531323240504 is an abundant number, since it is smaller than the sum of its proper divisors (611014359496).

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

531323240504 is a wasteful number, since it uses less digits than its factorization.

531323240504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26820 (or 26816 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 531323240504 its reverse (405042323135), we get a palindrome (936365563639).

The spelling of 531323240504 in words is "five hundred thirty-one billion, three hundred twenty-three million, two hundred forty thousand, five hundred four".