318115 has 16 divisors (see below), whose sum is σ = 446400. Its totient is φ = 213120.

The previous prime is 318107. The next prime is 318127. The reversal of 318115 is 511813.

It is not a de Polignac number, because 318115 - 2³ = 318107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318092 and 318101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2061 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (27900).

2³¹⁸¹¹⁵ is an apocalyptic number.

318115 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

318115 is a deficient number, since it is larger than the sum of its proper divisors (128285).

318115 is a wasteful number, since it uses less digits than its factorization.

318115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

The product of its digits is 120, while the sum is 19.

The square root of 318115 is about 564.0168437201. The cubic root of 318115 is about 68.2644689276.

Subtracting from 318115 its sum of digits (19), we obtain a square (318096 = 564²).

Adding to 318115 its reverse (511813), we get a palindrome (829928).

It can be divided in two parts, 3 and 18115, that multiplied together give a palindrome (54345).

The spelling of 318115 in words is "three hundred eighteen thousand, one hundred fifteen".