318684345 has 32 divisors (see below), whose sum is σ = 584894208. Its totient is φ = 145145088.

The previous prime is 318684337. The next prime is 318684403. The reversal of 318684345 is 543486813.

It is not a de Polignac number, because 318684345 - 2³ = 318684337 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 318684297 and 318684306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23607 + ... + 34563.

It is an arithmetic number, because the mean of its divisors is an integer number (18277944).

Almost surely, 2^318684345 is an apocalyptic number.

318684345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

318684345 is a deficient number, since it is larger than the sum of its proper divisors (266209863).

318684345 is a wasteful number, since it uses less digits than its factorization.

318684345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11249.

The product of its digits is 276480, while the sum is 42.

The square root of 318684345 is about 17851.7322688864. The cubic root of 318684345 is about 683.0517000566.

The spelling of 318684345 in words is "three hundred eighteen million, six hundred eighty-four thousand, three hundred forty-five".