318043940 has 12 divisors (see below), whose sum is σ = 667892316. Its totient is φ = 127217568.

The previous prime is 318043933. The next prime is 318043963. The reversal of 318043940 is 49340813.

It can be written as a sum of positive squares in 2 ways, for example, as 144384256 + 173659684 = 12016^2 + 13178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 318043897 and 318043906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7951079 + ... + 7951118.

It is an arithmetic number, because the mean of its divisors is an integer number (55657693).

Almost surely, 2^318043940 is an apocalyptic number.

It is an amenable number.

318043940 is an abundant number, since it is smaller than the sum of its proper divisors (349848376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318043940 is a wasteful number, since it uses less digits than its factorization.

318043940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15902206 (or 15902204 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 318043940 is about 17833.7864739937. The cubic root of 318043940 is about 682.5938561457.

The spelling of 318043940 in words is "three hundred eighteen million, forty-three thousand, nine hundred forty".