317259949 has 2 divisors, whose sum is σ = 317259950. Its totient is φ = 317259948.

The previous prime is 317259931. The next prime is 317259979. The reversal of 317259949 is 949952713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312228900 + 5031049 = 17670^2 + 2243^2 .

It is a cyclic number.

It is not a de Polignac number, because 317259949 - 2⁷ = 317259821 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317259919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158629974 + 158629975.

It is an arithmetic number, because the mean of its divisors is an integer number (158629975).

Almost surely, 2^317259949 is an apocalyptic number.

It is an amenable number.

317259949 is a deficient number, since it is larger than the sum of its proper divisors (1).

317259949 is an equidigital number, since it uses as much as digits as its factorization.

317259949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The square root of 317259949 is about 17811.7924140161. The cubic root of 317259949 is about 682.0325209593.

The spelling of 317259949 in words is "three hundred seventeen million, two hundred fifty-nine thousand, nine hundred forty-nine".