318648203217 has 12 divisors (see below), whose sum is σ = 460282507984. Its totient is φ = 212426190360.

The previous prime is 318648203179. The next prime is 318648203219. The reversal of 318648203217 is 712302846813.

318648203217 is a `hidden beast` number, since 318 + 6 + 4 + 8 + 2 + 0 + 321 + 7 = 666.

318648203217 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 318648203217 - 2¹⁰ = 318648202193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318648203219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142759 + ... + 810972.

Almost surely, 2^318648203217 is an apocalyptic number.

It is an amenable number.

318648203217 is a deficient number, since it is larger than the sum of its proper divisors (141634304767).

318648203217 is a wasteful number, since it uses less digits than its factorization.

318648203217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990860 (or 990857 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 318648203217 in words is "three hundred eighteen billion, six hundred forty-eight million, two hundred three thousand, two hundred seventeen".