531323312404 has 24 divisors (see below), whose sum is σ = 936688037600. Its totient is φ = 263704805280.

The previous prime is 531323312329. The next prime is 531323312411. The reversal of 531323312404 is 404213323135.

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, 510639 + ... + 1150390.

Almost surely, 2^531323312404 is an apocalyptic number.

It is an amenable number.

531323312404 is a deficient number, since it is larger than the sum of its proper divisors (405364725196).

531323312404 is a wasteful number, since it uses less digits than its factorization.

531323312404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661623 (or 1661621 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 531323312404 its reverse (404213323135), we get a palindrome (935536635539).

The spelling of 531323312404 in words is "five hundred thirty-one billion, three hundred twenty-three million, three hundred twelve thousand, four hundred four".