317208449 has 2 divisors, whose sum is σ = 317208450. Its totient is φ = 317208448.

The previous prime is 317208443. The next prime is 317208503. The reversal of 317208449 is 944802713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316840000 + 368449 = 17800^2 + 607^2 .

It is an emirp because it is prime and its reverse (944802713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317208449 - 2¹² = 317204353 is a prime.

It is not a weakly prime, because it can be changed into another prime (317208443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158604224 + 158604225.

It is an arithmetic number, because the mean of its divisors is an integer number (158604225).

Almost surely, 2^317208449 is an apocalyptic number.

It is an amenable number.

317208449 is a deficient number, since it is larger than the sum of its proper divisors (1).

317208449 is an equidigital number, since it uses as much as digits as its factorization.

317208449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 317208449 is about 17810.3466838801. The cubic root of 317208449 is about 681.9956147613.

The spelling of 317208449 in words is "three hundred seventeen million, two hundred eight thousand, four hundred forty-nine".