31348960717 has 2 divisors, whose sum is σ = 31348960718. Its totient is φ = 31348960716.

The previous prime is 31348960697. The next prime is 31348960723. The reversal of 31348960717 is 71706984313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19317942121 + 12031018596 = 138989^2 + 109686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31348960717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31348963717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15674480358 + 15674480359.

It is an arithmetic number, because the mean of its divisors is an integer number (15674480359).

Almost surely, 2^31348960717 is an apocalyptic number.

It is an amenable number.

31348960717 is a deficient number, since it is larger than the sum of its proper divisors (1).

31348960717 is an equidigital number, since it uses as much as digits as its factorization.

31348960717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 31348960717 in words is "thirty-one billion, three hundred forty-eight million, nine hundred sixty thousand, seven hundred seventeen".