318724310647 has 4 divisors (see below), whose sum is σ = 320679674680. Its totient is φ = 316768946616.

The previous prime is 318724310521. The next prime is 318724310657. The reversal of 318724310647 is 746013427813.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318724310647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 318724310597 and 318724310606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318724310657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977681772 + ... + 977682097.

It is an arithmetic number, because the mean of its divisors is an integer number (80169918670).

Almost surely, 2^318724310647 is an apocalyptic number.

318724310647 is a deficient number, since it is larger than the sum of its proper divisors (1955364033).

318724310647 is a wasteful number, since it uses less digits than its factorization.

318724310647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955364032.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 318724310647 in words is "three hundred eighteen billion, seven hundred twenty-four million, three hundred ten thousand, six hundred forty-seven".