317244217 has 2 divisors, whose sum is σ = 317244218. Its totient is φ = 317244216.

The previous prime is 317244209. The next prime is 317244229. The reversal of 317244217 is 712442713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310147321 + 7096896 = 17611^2 + 2664^2 .

It is a cyclic number.

It is not a de Polignac number, because 317244217 - 2³ = 317244209 is a prime.

It is not a weakly prime, because it can be changed into another prime (317244247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158622108 + 158622109.

It is an arithmetic number, because the mean of its divisors is an integer number (158622109).

Almost surely, 2^317244217 is an apocalyptic number.

It is an amenable number.

317244217 is a deficient number, since it is larger than the sum of its proper divisors (1).

317244217 is an equidigital number, since it uses as much as digits as its factorization.

317244217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 31.

The square root of 317244217 is about 17811.3507909984. The cubic root of 317244217 is about 682.0212474353.

The spelling of 317244217 in words is "three hundred seventeen million, two hundred forty-four thousand, two hundred seventeen".