118315 has 4 divisors (see below), whose sum is σ = 141984. Its totient is φ = 94648.

The previous prime is 118297. The next prime is 118343. The reversal of 118315 is 513811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 513811 = 113 ⋅4547.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118315 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118292 and 118301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11827 + ... + 11836.

It is an arithmetic number, because the mean of its divisors is an integer number (35496).

2¹¹⁸³¹⁵ is an apocalyptic number.

118315 is a deficient number, since it is larger than the sum of its proper divisors (23669).

118315 is an equidigital number, since it uses as much as digits as its factorization.

118315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23668.

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

The square root of 118315 is about 343.9694753899. The cubic root of 118315 is about 49.0922875491.

The spelling of 118315 in words is "one hundred eighteen thousand, three hundred fifteen".