31132200132013 has 4 divisors (see below), whose sum is σ = 31132315405180. Its totient is φ = 31132084858848.

The previous prime is 31132200131993. The next prime is 31132200132031. The reversal of 31132200132013 is 31023100223113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17633431811524 + 13498768320489 = 4199218^2 + 3674067^2 .

It is a cyclic number.

It is not a de Polignac number, because 31132200132013 - 2²⁵ = 31132166577581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132200132073) 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, 57230520 + ... + 57771937.

It is an arithmetic number, because the mean of its divisors is an integer number (7783078851295).

Almost surely, 2^{31132200132013} is an apocalyptic number.

It is an amenable number.

31132200132013 is a deficient number, since it is larger than the sum of its proper divisors (115273167).

31132200132013 is a wasteful number, since it uses less digits than its factorization.

31132200132013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115273166.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31132200132013 its reverse (31023100223113), we get a palindrome (62155300355126).

The spelling of 31132200132013 in words is "thirty-one trillion, one hundred thirty-two billion, two hundred million, one hundred thirty-two thousand, thirteen".