351320645317 has 2 divisors, whose sum is σ = 351320645318. Its totient is φ = 351320645316.

The previous prime is 351320645243. The next prime is 351320645329. The reversal of 351320645317 is 713546023153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324346196196 + 26974449121 = 569514^2 + 164239^2 .

It is a cyclic number.

It is not a de Polignac number, because 351320645317 - 2³¹ = 349173161669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 351320645317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351320645917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175660322658 + 175660322659.

It is an arithmetic number, because the mean of its divisors is an integer number (175660322659).

Almost surely, 2^351320645317 is an apocalyptic number.

It is an amenable number.

351320645317 is a deficient number, since it is larger than the sum of its proper divisors (1).

351320645317 is an equidigital number, since it uses as much as digits as its factorization.

351320645317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 351320645317 in words is "three hundred fifty-one billion, three hundred twenty million, six hundred forty-five thousand, three hundred seventeen".