317643 has 8 divisors (see below), whose sum is σ = 427728. Its totient is φ = 209664.

The previous prime is 317621. The next prime is 317651. The reversal of 317643 is 346713.

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

It is a de Polignac number, because none of the positive numbers 2^k-317643 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 317643.

It is not an unprimeable number, because it can be changed into a prime (317663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130 + ... + 807.

It is an arithmetic number, because the mean of its divisors is an integer number (53466).

2³¹⁷⁶⁴³ is an apocalyptic number.

317643 is a deficient number, since it is larger than the sum of its proper divisors (110085).

317643 is a wasteful number, since it uses less digits than its factorization.

317643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053.

The product of its digits is 1512, while the sum is 24.

The square root of 317643 is about 563.5982611755. The cubic root of 317643 is about 68.2306899711.

The spelling of 317643 in words is "three hundred seventeen thousand, six hundred forty-three".