315263217774209 has 2 divisors, whose sum is σ = 315263217774210. Its totient is φ = 315263217774208.

The previous prime is 315263217774191. The next prime is 315263217774227. The reversal of 315263217774209 is 902477712362513.

It is a balanced prime because it is at equal distance from previous prime (315263217774191) and next prime (315263217774227).

It can be written as a sum of positive squares in only one way, i.e., 217734814105600 + 97528403668609 = 14755840^2 + 9875647^2 .

It is a cyclic number.

It is not a de Polignac number, because 315263217774209 - 2⁸ = 315263217773953 is a prime.

It is not a weakly prime, because it can be changed into another prime (315263217774299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157631608887104 + 157631608887105.

It is an arithmetic number, because the mean of its divisors is an integer number (157631608887105).

Almost surely, 2^{315263217774209} is an apocalyptic number.

It is an amenable number.

315263217774209 is a deficient number, since it is larger than the sum of its proper divisors (1).

315263217774209 is an equidigital number, since it uses as much as digits as its factorization.

315263217774209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26671680, while the sum is 59.

The spelling of 315263217774209 in words is "three hundred fifteen trillion, two hundred sixty-three billion, two hundred seventeen million, seven hundred seventy-four thousand, two hundred nine".