318704421 has 16 divisors (see below), whose sum is σ = 498771584. Its totient is φ = 177194304.

The previous prime is 318704417. The next prime is 318704437. The reversal of 318704421 is 124407813.

It is not a de Polignac number, because 318704421 - 2² = 318704417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318704411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204310 + ... + 205863.

It is an arithmetic number, because the mean of its divisors is an integer number (31173224).

Almost surely, 2^318704421 is an apocalyptic number.

It is an amenable number.

318704421 is a deficient number, since it is larger than the sum of its proper divisors (180067163).

318704421 is a wasteful number, since it uses less digits than its factorization.

318704421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410220.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 318704421 is about 17852.2945584034. The cubic root of 318704421 is about 683.0660430454.

The spelling of 318704421 in words is "three hundred eighteen million, seven hundred four thousand, four hundred twenty-one".