531331133136 has 20 divisors (see below), whose sum is σ = 1372605427392. Its totient is φ = 177110377696.

The previous prime is 531331133117. The next prime is 531331133141. The reversal of 531331133136 is 631331133135.

It is a junction number, because it is equal to n+sod(n) for n = 531331133097 and 531331133106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5534699256 + ... + 5534699351.

Almost surely, 2^531331133136 is an apocalyptic number.

It is an amenable number.

531331133136 is an abundant number, since it is smaller than the sum of its proper divisors (841274294256).

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

531331133136 is a wasteful number, since it uses less digits than its factorization.

531331133136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11069398618 (or 11069398612 counting only the distinct ones).

The product of its digits is 21870, while the sum is 33.

Subtracting 531331133136 from its reverse (631331133135), we obtain a palindrome (99999999999).

The spelling of 531331133136 in words is "five hundred thirty-one billion, three hundred thirty-one million, one hundred thirty-three thousand, one hundred thirty-six".