317021070081 has 4 divisors (see below), whose sum is σ = 422694760112. Its totient is φ = 211347380052.

The previous prime is 317021070077. The next prime is 317021070127. The reversal of 317021070081 is 180070120713.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 317021070081 - 2² = 317021070077 is a prime.

It is a super-2 number, since 2×317021070081² (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 (317021070011) 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, 52836845011 + ... + 52836845016.

It is an arithmetic number, because the mean of its divisors is an integer number (105673690028).

Almost surely, 2^317021070081 is an apocalyptic number.

It is an amenable number.

317021070081 is a deficient number, since it is larger than the sum of its proper divisors (105673690031).

317021070081 is a wasteful number, since it uses less digits than its factorization.

317021070081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105673690030.

The product of its (nonzero) digits is 2352, while the sum is 30.

Adding to 317021070081 its reverse (180070120713), we get a palindrome (497091190794).

The spelling of 317021070081 in words is "three hundred seventeen billion, twenty-one million, seventy thousand, eighty-one".