31625152613 has 2 divisors, whose sum is σ = 31625152614. Its totient is φ = 31625152612.

The previous prime is 31625152607. The next prime is 31625152621.

31625152613 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25794608449 + 5830544164 = 160607^2 + 76358^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 31625152613 - 2⁶ = 31625152549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31625152673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15812576306 + 15812576307.

It is an arithmetic number, because the mean of its divisors is an integer number (15812576307).

Almost surely, 2^31625152613 is an apocalyptic number.

It is an amenable number.

31625152613 is a deficient number, since it is larger than the sum of its proper divisors (1).

31625152613 is an equidigital number, since it uses as much as digits as its factorization.

31625152613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The spelling of 31625152613 in words is "thirty-one billion, six hundred twenty-five million, one hundred fifty-two thousand, six hundred thirteen".