317245 has 8 divisors (see below), whose sum is σ = 386784. Its totient is φ = 249744.

The previous prime is 317227. The next prime is 317257. The reversal of 317245 is 542713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 317245 - 2¹⁵ = 284477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139 + ... + 808.

It is an arithmetic number, because the mean of its divisors is an integer number (48348).

2³¹⁷²⁴⁵ is an apocalyptic number.

It is an amenable number.

317245 is a deficient number, since it is larger than the sum of its proper divisors (69539).

317245 is an equidigital number, since it uses as much as digits as its factorization.

317245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019.

The product of its digits is 840, while the sum is 22.

The square root of 317245 is about 563.2450621177. The cubic root of 317245 is about 68.2021808541.

Adding to 317245 its reverse (542713), we get a palindrome (859958).

The spelling of 317245 in words is "three hundred seventeen thousand, two hundred forty-five".