1317031717 has 2 divisors, whose sum is σ = 1317031718. Its totient is φ = 1317031716.

The previous prime is 1317031693. The next prime is 1317031739. The reversal of 1317031717 is 7171307131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 990109156 + 326922561 = 31466^2 + 18081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317031717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317031747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658515858 + 658515859.

It is an arithmetic number, because the mean of its divisors is an integer number (658515859).

Almost surely, 2^1317031717 is an apocalyptic number.

It is an amenable number.

1317031717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317031717 is an equidigital number, since it uses as much as digits as its factorization.

1317031717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3087, while the sum is 31.

The square root of 1317031717 is about 36290.9316083233. The cubic root of 1317031717 is about 1096.1384480319.

Adding to 1317031717 its reverse (7171307131), we get a palindrome (8488338848).

The spelling of 1317031717 in words is "one billion, three hundred seventeen million, thirty-one thousand, seven hundred seventeen".