317971 has 2 divisors, whose sum is σ = 317972. Its totient is φ = 317970.

The previous prime is 317969. The next prime is 317983. The reversal of 317971 is 179713.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 317971 - 2¹ = 317969 is a prime.

It is a super-2 number, since 2×317971² = 202211113682, which contains 22 as substring.

Together with 317969, it forms a pair of twin primes.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (317921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158985 + 158986.

It is an arithmetic number, because the mean of its divisors is an integer number (158986).

2³¹⁷⁹⁷¹ is an apocalyptic number.

317971 is a deficient number, since it is larger than the sum of its proper divisors (1).

317971 is an equidigital number, since it uses as much as digits as its factorization.

317971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1323, while the sum is 28.

The square root of 317971 is about 563.8891735084. The cubic root of 317971 is about 68.2541670272.

The spelling of 317971 in words is "three hundred seventeen thousand, nine hundred seventy-one".