318885 has 16 divisors (see below), whose sum is σ = 583296. Its totient is φ = 145728.

The previous prime is 318883. The next prime is 318889. The reversal of 318885 is 588813.

It is not a de Polignac number, because 318885 - 2¹ = 318883 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1414 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (36456).

2³¹⁸⁸⁸⁵ is an apocalyptic number.

318885 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

318885 is a deficient number, since it is larger than the sum of its proper divisors (264411).

318885 is a wasteful number, since it uses less digits than its factorization.

318885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052.

The product of its digits is 7680, while the sum is 33.

The square root of 318885 is about 564.6990348850. The cubic root of 318885 is about 68.3195027862.

The spelling of 318885 in words is "three hundred eighteen thousand, eight hundred eighty-five".