317215 has 4 divisors (see below), whose sum is σ = 380664. Its totient is φ = 253768.

The previous prime is 317209. The next prime is 317227. The reversal of 317215 is 512713.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 317215 - 2⁷ = 317087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 317192 and 317201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31717 + ... + 31726.

It is an arithmetic number, because the mean of its divisors is an integer number (95166).

2³¹⁷²¹⁵ is an apocalyptic number.

317215 is a deficient number, since it is larger than the sum of its proper divisors (63449).

317215 is an equidigital number, since it uses as much as digits as its factorization.

317215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63448.

The product of its digits is 210, while the sum is 19.

The square root of 317215 is about 563.2184300962. The cubic root of 317215 is about 68.2000309595.

Adding to 317215 its reverse (512713), we get a palindrome (829928).

The spelling of 317215 in words is "three hundred seventeen thousand, two hundred fifteen".