31270206613 has 2 divisors, whose sum is σ = 31270206614. Its totient is φ = 31270206612.

The previous prime is 31270206599. The next prime is 31270206619. The reversal of 31270206613 is 31660207213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26804893284 + 4465313329 = 163722^2 + 66823^2 .

It is a cyclic number.

It is not a de Polignac number, because 31270206613 - 2⁵ = 31270206581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31270206619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15635103306 + 15635103307.

It is an arithmetic number, because the mean of its divisors is an integer number (15635103307).

Almost surely, 2^31270206613 is an apocalyptic number.

It is an amenable number.

31270206613 is a deficient number, since it is larger than the sum of its proper divisors (1).

31270206613 is an equidigital number, since it uses as much as digits as its factorization.

31270206613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 31270206613 in words is "thirty-one billion, two hundred seventy million, two hundred six thousand, six hundred thirteen".