31311021130132 has 12 divisors (see below), whose sum is σ = 54794387916576. Its totient is φ = 15655481725400.

The previous prime is 31311021130121. The next prime is 31311021130139. The reversal of 31311021130132 is 23103112011313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311021130139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4667494 + ... + 9187357.

It is an arithmetic number, because the mean of its divisors is an integer number (4566198993048).

Almost surely, 2^{31311021130132} is an apocalyptic number.

It is an amenable number.

31311021130132 is a deficient number, since it is larger than the sum of its proper divisors (23483366786444).

31311021130132 is a wasteful number, since it uses less digits than its factorization.

31311021130132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14419838 (or 14419836 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31311021130132 its reverse (23103112011313), we get a palindrome (54414133141445).

The spelling of 31311021130132 in words is "thirty-one trillion, three hundred eleven billion, twenty-one million, one hundred thirty thousand, one hundred thirty-two".