317812 has 24 divisors (see below), whose sum is σ = 628992. Its totient is φ = 139200.

The previous prime is 317797. The next prime is 317827. The reversal of 317812 is 218713.

It is an interprime number because it is at equal distance from previous prime (317797) and next prime (317827).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

317812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1248 + ... + 1480.

It is an arithmetic number, because the mean of its divisors is an integer number (26208).

2³¹⁷⁸¹² is an apocalyptic number.

It is an amenable number.

317812 is a deficient number, since it is larger than the sum of its proper divisors (311180).

317812 is a wasteful number, since it uses less digits than its factorization.

317812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 277 counting only the distinct ones).

The product of its digits is 336, while the sum is 22.

The square root of 317812 is about 563.7481707287. The cubic root of 317812 is about 68.2427883984.

Subtracting from 317812 its reverse (218713), we obtain a palindrome (99099).

The spelling of 317812 in words is "three hundred seventeen thousand, eight hundred twelve".