318118 has 4 divisors (see below), whose sum is σ = 477180. Its totient is φ = 159058.

The previous prime is 318107. The next prime is 318127. The reversal of 318118 is 811813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 811813 = 19 ⋅42727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79528 + ... + 79531.

It is an arithmetic number, because the mean of its divisors is an integer number (119295).

2³¹⁸¹¹⁸ is an apocalyptic number.

318118 is a deficient number, since it is larger than the sum of its proper divisors (159062).

318118 is a wasteful number, since it uses less digits than its factorization.

318118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159061.

The product of its digits is 192, while the sum is 22.

The square root of 318118 is about 564.0195032089. The cubic root of 318118 is about 68.2646835175.

Subtracting from 318118 its sum of digits (22), we obtain a square (318096 = 564²).

The spelling of 318118 in words is "three hundred eighteen thousand, one hundred eighteen".