318117 has 8 divisors (see below), whose sum is σ = 446560. Its totient is φ = 200880.

The previous prime is 318107. The next prime is 318127. The reversal of 318117 is 711813.

It is an interprime number because it is at equal distance from previous prime (318107) and next prime (318127).

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

It is not a de Polignac number, because 318117 - 2¹² = 314021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 318093 and 318102.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318117.

It is not an unprimeable number, because it can be changed into a prime (318107) 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, 2734 + ... + 2847.

It is an arithmetic number, because the mean of its divisors is an integer number (55820).

2³¹⁸¹¹⁷ is an apocalyptic number.

It is an amenable number.

318117 is a deficient number, since it is larger than the sum of its proper divisors (128443).

318117 is a wasteful number, since it uses less digits than its factorization.

318117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5603.

The product of its digits is 168, while the sum is 21.

The square root of 318117 is about 564.0186167140. The cubic root of 318117 is about 68.2646119877.

Subtracting from 318117 its sum of digits (21), we obtain a square (318096 = 564²).

It can be divided in two parts, 318 and 117, that added together give a triangular number (435 = T₂₉).

The spelling of 318117 in words is "three hundred eighteen thousand, one hundred seventeen".