531313306132 has 24 divisors (see below), whose sum is σ = 1062695418176. Its totient is φ = 227690958528.

The previous prime is 531313306127. The next prime is 531313306141. The reversal of 531313306132 is 231603313135.

It is a junction number, because it is equal to n+sod(n) for n = 531313306094 and 531313306103.

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, 168513 + ... + 1044520.

Almost surely, 2^531313306132 is an apocalyptic number.

It is an amenable number.

531313306132 is an abundant number, since it is smaller than the sum of its proper divisors (531382112044).

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

531313306132 is a wasteful number, since it uses less digits than its factorization.

531313306132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228687 (or 1228685 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 31.

Adding to 531313306132 its reverse (231603313135), we get a palindrome (762916619267).

The spelling of 531313306132 in words is "five hundred thirty-one billion, three hundred thirteen million, three hundred six thousand, one hundred thirty-two".