315631975502717 has 2 divisors, whose sum is σ = 315631975502718. Its totient is φ = 315631975502716.

The previous prime is 315631975502687. The next prime is 315631975502719. The reversal of 315631975502717 is 717205579136513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240416839955161 + 75215135547556 = 15505381^2 + 8672666^2 .

It is a cyclic number.

It is not a de Polignac number, because 315631975502717 - 2⁸ = 315631975502461 is a prime.

It is a super-3 number, since 3×315631975502717³ (a number of 44 digits) contains 333 as substring.

Together with 315631975502719, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315631975502717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315631975502719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157815987751358 + 157815987751359.

It is an arithmetic number, because the mean of its divisors is an integer number (157815987751359).

Almost surely, 2^{315631975502717} is an apocalyptic number.

It is an amenable number.

315631975502717 is a deficient number, since it is larger than the sum of its proper divisors (1).

315631975502717 is an equidigital number, since it uses as much as digits as its factorization.

315631975502717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41674500, while the sum is 62.

The spelling of 315631975502717 in words is "three hundred fifteen trillion, six hundred thirty-one billion, nine hundred seventy-five million, five hundred two thousand, seven hundred seventeen".