317117145 has 8 divisors (see below), whose sum is σ = 507387456. Its totient is φ = 169129136.

The previous prime is 317117111. The next prime is 317117149. The reversal of 317117145 is 541711713.

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 317117145 - 2⁶ = 317117081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (317117149) 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, 10570557 + ... + 10570586.

It is an arithmetic number, because the mean of its divisors is an integer number (63423432).

Almost surely, 2^317117145 is an apocalyptic number.

It is an amenable number.

317117145 is a deficient number, since it is larger than the sum of its proper divisors (190270311).

317117145 is a wasteful number, since it uses less digits than its factorization.

317117145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21141151.

The product of its digits is 2940, while the sum is 30.

The square root of 317117145 is about 17807.7832702445. The cubic root of 317117145 is about 681.9301741935.

Adding to 317117145 its reverse (541711713), we get a palindrome (858828858).

The spelling of 317117145 in words is "three hundred seventeen million, one hundred seventeen thousand, one hundred forty-five".