317145 has 8 divisors (see below), whose sum is σ = 507456. Its totient is φ = 169136.

The previous prime is 317123. The next prime is 317159. The reversal of 317145 is 541713.

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 317145 - 2⁹ = 316633 is a prime.

317145 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 317145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10557 + ... + 10586.

It is an arithmetic number, because the mean of its divisors is an integer number (63432).

2³¹⁷¹⁴⁵ is an apocalyptic number.

It is an amenable number.

317145 is a deficient number, since it is larger than the sum of its proper divisors (190311).

317145 is a wasteful number, since it uses less digits than its factorization.

317145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21151.

The product of its digits is 420, while the sum is 21.

The square root of 317145 is about 563.1562838147. The cubic root of 317145 is about 68.1950140116.

Adding to 317145 its reverse (541713), we get a palindrome (858858).

The spelling of 317145 in words is "three hundred seventeen thousand, one hundred forty-five".