318113945 has 16 divisors (see below), whose sum is σ = 404611200. Its totient is φ = 239272704.

The previous prime is 318113933. The next prime is 318113947. The reversal of 318113945 is 549311813.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318113945 is a prime.

It is not an unprimeable number, because it can be changed into a prime (318113947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150506 + ... + 152604.

It is an arithmetic number, because the mean of its divisors is an integer number (25288200).

Almost surely, 2^318113945 is an apocalyptic number.

It is an amenable number.

318113945 is a deficient number, since it is larger than the sum of its proper divisors (86497255).

318113945 is a wasteful number, since it uses less digits than its factorization.

318113945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904.

The product of its digits is 12960, while the sum is 35.

The square root of 318113945 is about 17835.7490731396. The cubic root of 318113945 is about 682.6439346320.

The spelling of 318113945 in words is "three hundred eighteen million, one hundred thirteen thousand, nine hundred forty-five".