315257351323709 has 2 divisors, whose sum is σ = 315257351323710. Its totient is φ = 315257351323708.

The previous prime is 315257351323669. The next prime is 315257351323741. The reversal of 315257351323709 is 907323153752513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206153685950809 + 109103665372900 = 14358053^2 + 10445270^2 .

It is a cyclic number.

It is not a de Polignac number, because 315257351323709 - 2¹² = 315257351319613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315257351343709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157628675661854 + 157628675661855.

It is an arithmetic number, because the mean of its divisors is an integer number (157628675661855).

Almost surely, 2^{315257351323709} is an apocalyptic number.

It is an amenable number.

315257351323709 is a deficient number, since it is larger than the sum of its proper divisors (1).

315257351323709 is an equidigital number, since it uses as much as digits as its factorization.

315257351323709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17860500, while the sum is 56.

The spelling of 315257351323709 in words is "three hundred fifteen trillion, two hundred fifty-seven billion, three hundred fifty-one million, three hundred twenty-three thousand, seven hundred nine".