31131013132 has 6 divisors (see below), whose sum is σ = 54479272988. Its totient is φ = 15565506564.

The previous prime is 31131013117. The next prime is 31131013157. The reversal of 31131013132 is 23131013113.

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 as a sum of consecutive naturals, namely, 3891376638 + ... + 3891376645.

Almost surely, 2^31131013132 is an apocalyptic number.

It is an amenable number.

31131013132 is a deficient number, since it is larger than the sum of its proper divisors (23348259856).

31131013132 is a wasteful number, since it uses less digits than its factorization.

31131013132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782753287 (or 7782753285 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Subtracting from 31131013132 its sum of digits (19), we obtain a palindrome (31131013113).

Adding to 31131013132 its reverse (23131013113), we get a palindrome (54262026245).

The spelling of 31131013132 in words is "thirty-one billion, one hundred thirty-one million, thirteen thousand, one hundred thirty-two".