317947313 has 4 divisors (see below), whose sum is σ = 318983280. Its totient is φ = 316911348.

The previous prime is 317947291. The next prime is 317947319. The reversal of 317947313 is 313749713.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 317947313 - 2¹⁶ = 317881777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317947319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517523 + ... + 518136.

It is an arithmetic number, because the mean of its divisors is an integer number (79745820).

Almost surely, 2^317947313 is an apocalyptic number.

It is an amenable number.

317947313 is a deficient number, since it is larger than the sum of its proper divisors (1035967).

317947313 is a wasteful number, since it uses less digits than its factorization.

317947313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035966.

The product of its digits is 47628, while the sum is 38.

The square root of 317947313 is about 17831.0771688084. The cubic root of 317947313 is about 682.5247213827.

The spelling of 317947313 in words is "three hundred seventeen million, nine hundred forty-seven thousand, three hundred thirteen".