318872085 has 32 divisors (see below), whose sum is σ = 583790592. Its totient is φ = 145592640.

The previous prime is 318872063. The next prime is 318872089. The reversal of 318872085 is 580278813.

It is a happy number.

It is not a de Polignac number, because 318872085 - 2⁵ = 318872053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318872089) 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 31 ways as a sum of consecutive naturals, for example, 128022 + ... + 130488.

It is an arithmetic number, because the mean of its divisors is an integer number (18243456).

Almost surely, 2^318872085 is an apocalyptic number.

318872085 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

318872085 is a deficient number, since it is larger than the sum of its proper divisors (264918507).

318872085 is a wasteful number, since it uses less digits than its factorization.

318872085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 318872085 is about 17856.9898079156. The cubic root of 318872085 is about 683.1858044922.

The spelling of 318872085 in words is "three hundred eighteen million, eight hundred seventy-two thousand, eighty-five".