317279251 has 2 divisors, whose sum is σ = 317279252. Its totient is φ = 317279250.

The previous prime is 317279231. The next prime is 317279257. The reversal of 317279251 is 152972713.

It is a strong prime.

It is an emirp because it is prime and its reverse (152972713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317279251 - 2¹⁷ = 317148179 is a prime.

It is a super-2 number, since 2×317279251² = 201332246230242002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 317279251.

It is not a weakly prime, because it can be changed into another prime (317279257) 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, 158639625 + 158639626.

It is an arithmetic number, because the mean of its divisors is an integer number (158639626).

Almost surely, 2^317279251 is an apocalyptic number.

317279251 is a deficient number, since it is larger than the sum of its proper divisors (1).

317279251 is an equidigital number, since it uses as much as digits as its factorization.

317279251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 37.

The square root of 317279251 is about 17812.3342378252. The cubic root of 317279251 is about 682.0463522301.

The spelling of 317279251 in words is "three hundred seventeen million, two hundred seventy-nine thousand, two hundred fifty-one".