318220605947 has 16 divisors (see below), whose sum is σ = 340318452480. Its totient is φ = 296893900800.

The previous prime is 318220605943. The next prime is 318220605971. The reversal of 318220605947 is 749506022813.

It is a cyclic number.

It is not a de Polignac number, because 318220605947 - 2² = 318220605943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318220605943) 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, 342047 + ... + 868007.

It is an arithmetic number, because the mean of its divisors is an integer number (21269903280).

It is a 1-persistent number, because it is pandigital, but 2⋅318220605947 = 636441211894 is not.

Almost surely, 2^318220605947 is an apocalyptic number.

318220605947 is a deficient number, since it is larger than the sum of its proper divisors (22097846533).

318220605947 is a wasteful number, since it uses less digits than its factorization.

318220605947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526694.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 318220605947 in words is "three hundred eighteen billion, two hundred twenty million, six hundred five thousand, nine hundred forty-seven".