318383685 has 24 divisors (see below), whose sum is σ = 552707064. Its totient is φ = 169545600.

The previous prime is 318383683. The next prime is 318383693. The reversal of 318383685 is 586383813.

It can be written as a sum of positive squares in 4 ways, for example, as 81162081 + 237221604 = 9009^2 + 15402^2 .

It is not a de Polignac number, because 318383685 - 2¹ = 318383683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 318383685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318383683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26499 + ... + 36591.

It is an arithmetic number, because the mean of its divisors is an integer number (23029461).

Almost surely, 2^318383685 is an apocalyptic number.

It is an amenable number.

318383685 is a deficient number, since it is larger than the sum of its proper divisors (234323379).

318383685 is a wasteful number, since it uses less digits than its factorization.

318383685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10805 (or 10802 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 318383685 is about 17843.3092502484. The cubic root of 318383685 is about 682.8368260546.

It can be divided in two parts, 3183 and 83685, that added together give a palindrome (86868).

The spelling of 318383685 in words is "three hundred eighteen million, three hundred eighty-three thousand, six hundred eighty-five".