31013013132 has 24 divisors (see below), whose sum is σ = 80404108400. Its totient is φ = 10337671008.

The previous prime is 31013013127. The next prime is 31013013139. The reversal of 31013013132 is 23131031013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31013013139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143578657 + ... + 143578872.

Almost surely, 2^31013013132 is an apocalyptic number.

It is an amenable number.

31013013132 is an abundant number, since it is smaller than the sum of its proper divisors (49391095268).

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

31013013132 is a wasteful number, since it uses less digits than its factorization.

31013013132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287157542 (or 287157534 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31013013132 its reverse (23131031013), we get a palindrome (54144044145).

The spelling of 31013013132 in words is "thirty-one billion, thirteen million, thirteen thousand, one hundred thirty-two".