317668849 has 2 divisors, whose sum is σ = 317668850. Its totient is φ = 317668848.

The previous prime is 317668823. The next prime is 317668859. The reversal of 317668849 is 948866713.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232013824 + 85655025 = 15232^2 + 9255^2 .

It is a cyclic number.

It is not a de Polignac number, because 317668849 - 2¹⁷ = 317537777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 317668796 and 317668805.

It is not a weakly prime, because it can be changed into another prime (317668859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158834424 + 158834425.

It is an arithmetic number, because the mean of its divisors is an integer number (158834425).

Almost surely, 2^317668849 is an apocalyptic number.

It is an amenable number.

317668849 is a deficient number, since it is larger than the sum of its proper divisors (1).

317668849 is an equidigital number, since it uses as much as digits as its factorization.

317668849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 52.

The square root of 317668849 is about 17823.2670686381. The cubic root of 317668849 is about 682.3254073571.

The spelling of 317668849 in words is "three hundred seventeen million, six hundred sixty-eight thousand, eight hundred forty-nine".