31376671717 has 2 divisors, whose sum is σ = 31376671718. Its totient is φ = 31376671716.

The previous prime is 31376671643. The next prime is 31376671721. The reversal of 31376671717 is 71717667313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16969230756 + 14407440961 = 130266^2 + 120031^2 .

It is an emirp because it is prime and its reverse (71717667313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31376671717 - 2⁷ = 31376671589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31376671727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15688335858 + 15688335859.

It is an arithmetic number, because the mean of its divisors is an integer number (15688335859).

Almost surely, 2^31376671717 is an apocalyptic number.

It is an amenable number.

31376671717 is a deficient number, since it is larger than the sum of its proper divisors (1).

31376671717 is an equidigital number, since it uses as much as digits as its factorization.

31376671717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777924, while the sum is 49.

The spelling of 31376671717 in words is "thirty-one billion, three hundred seventy-six million, six hundred seventy-one thousand, seven hundred seventeen".