317893 has 4 divisors (see below), whose sum is σ = 320320. Its totient is φ = 315468.

The previous prime is 317887. The next prime is 317903. The reversal of 317893 is 398713.

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 a de Polignac number, because none of the positive numbers 2^k-317893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317593) 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, 1005 + ... + 1282.

It is an arithmetic number, because the mean of its divisors is an integer number (80080).

2³¹⁷⁸⁹³ is an apocalyptic number.

It is an amenable number.

317893 is a deficient number, since it is larger than the sum of its proper divisors (2427).

317893 is a wasteful number, since it uses less digits than its factorization.

317893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426.

The product of its digits is 4536, while the sum is 31.

The square root of 317893 is about 563.8200067397. The cubic root of 317893 is about 68.2485855325.

The spelling of 317893 in words is "three hundred seventeen thousand, eight hundred ninety-three".