317631273613 has 4 divisors (see below), whose sum is σ = 317632651900. Its totient is φ = 317629895328.

The previous prime is 317631273611. The next prime is 317631273623. The reversal of 317631273613 is 316372136713.

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

It can be written as a sum of positive squares in 2 ways, for example, as 224299801609 + 93331472004 = 473603^2 + 305502^2 .

It is a cyclic number.

It is not a de Polignac number, because 317631273613 - 2¹ = 317631273611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 317631273613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317631273611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250320 + ... + 835417.

It is an arithmetic number, because the mean of its divisors is an integer number (79408162975).

Almost surely, 2^317631273613 is an apocalyptic number.

It is an amenable number.

317631273613 is a deficient number, since it is larger than the sum of its proper divisors (1378287).

317631273613 is a wasteful number, since it uses less digits than its factorization.

317631273613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378286.

The product of its digits is 285768, while the sum is 43.

The spelling of 317631273613 in words is "three hundred seventeen billion, six hundred thirty-one million, two hundred seventy-three thousand, six hundred thirteen".