531286463236 has 9 divisors (see below), whose sum is σ = 929753861799. Its totient is φ = 265642502724.

The previous prime is 531286463219. The next prime is 531286463263. The reversal of 531286463236 is 632364682135.

The square root of 531286463236 is 728894.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531286463236.

It is an unprimeable number.

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 in 2 ways as a sum of consecutive naturals, for example, 1275565 + ... + 1640011.

Almost surely, 2^531286463236 is an apocalyptic number.

531286463236 is the 728894-th square number.

It is an amenable number.

531286463236 is a deficient number, since it is larger than the sum of its proper divisors (398467398563).

531286463236 is an frugal number, since it uses more digits than its factorization.

531286463236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728898 (or 364449 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 49.

Multiplying 531286463236 by its sum of digits (49), we get a square (26033036698564 = 5102258²).

The spelling of 531286463236 in words is "five hundred thirty-one billion, two hundred eighty-six million, four hundred sixty-three thousand, two hundred thirty-six".