317770951681 has 4 divisors (see below), whose sum is σ = 317795007492. Its totient is φ = 317746895872.

The previous prime is 317770951669. The next prime is 317770951709. The reversal of 317770951681 is 186159077713.

It is a happy number.

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 81458297281 + 236312654400 = 285409^2 + 486120^2 .

It is a cyclic number.

It is not a de Polignac number, because 317770951681 - 2²³ = 317762563073 is a prime.

It is a super-2 number, since 2×317770951681² (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 (317770951781) 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, 12008080 + ... + 12034513.

It is an arithmetic number, because the mean of its divisors is an integer number (79448751873).

Almost surely, 2^317770951681 is an apocalyptic number.

It is an amenable number.

317770951681 is a deficient number, since it is larger than the sum of its proper divisors (24055811).

317770951681 is a wasteful number, since it uses less digits than its factorization.

317770951681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24055810.

The product of its (nonzero) digits is 2222640, while the sum is 55.

The spelling of 317770951681 in words is "three hundred seventeen billion, seven hundred seventy million, nine hundred fifty-one thousand, six hundred eighty-one".