31570107323213 has 4 divisors (see below), whose sum is σ = 31574177217180. Its totient is φ = 31566037429248.

The previous prime is 31570107323197. The next prime is 31570107323231. The reversal of 31570107323213 is 31232370107513.

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 10079215349284 + 21490891973929 = 3174778^2 + 4635827^2 .

It is a cyclic number.

It is not a de Polignac number, because 31570107323213 - 2⁴ = 31570107323197 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 (31570107923213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2034935348 + ... + 2034950861.

It is an arithmetic number, because the mean of its divisors is an integer number (7893544304295).

Almost surely, 2^{31570107323213} is an apocalyptic number.

It is an amenable number.

31570107323213 is a deficient number, since it is larger than the sum of its proper divisors (4069893967).

31570107323213 is an equidigital number, since it uses as much as digits as its factorization.

31570107323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4069893966.

The product of its (nonzero) digits is 79380, while the sum is 38.

The spelling of 31570107323213 in words is "thirty-one trillion, five hundred seventy billion, one hundred seven million, three hundred twenty-three thousand, two hundred thirteen".