317531294881 has 4 divisors (see below), whose sum is σ = 318894090372. Its totient is φ = 316168499392.

The previous prime is 317531294869. The next prime is 317531294887. The reversal of 317531294881 is 188492135713.

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 22405299856 + 295125995025 = 149684^2 + 543255^2 .

It is a cyclic number.

It is not a de Polignac number, because 317531294881 - 2²¹ = 317529197729 is a prime.

It is a super-2 number, since 2×317531294881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317531294887) 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, 681397396 + ... + 681397861.

It is an arithmetic number, because the mean of its divisors is an integer number (79723522593).

Almost surely, 2^317531294881 is an apocalyptic number.

It is an amenable number.

317531294881 is a deficient number, since it is larger than the sum of its proper divisors (1362795491).

317531294881 is a wasteful number, since it uses less digits than its factorization.

317531294881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362795490.

The product of its digits is 1451520, while the sum is 52.

The spelling of 317531294881 in words is "three hundred seventeen billion, five hundred thirty-one million, two hundred ninety-four thousand, eight hundred eighty-one".