12317072281 has 2 divisors, whose sum is σ = 12317072282. Its totient is φ = 12317072280.

The previous prime is 12317072167. The next prime is 12317072321. The reversal of 12317072281 is 18227071321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10917115225 + 1399957056 = 104485^2 + 37416^2 .

It is an emirp because it is prime and its reverse (18227071321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12317072281 - 2⁷ = 12317072153 is a prime.

It is a super-2 number, since 2×12317072281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12317072681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6158536140 + 6158536141.

It is an arithmetic number, because the mean of its divisors is an integer number (6158536141).

Almost surely, 2^12317072281 is an apocalyptic number.

It is an amenable number.

12317072281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12317072281 is an equidigital number, since it uses as much as digits as its factorization.

12317072281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 12317072281 in words is "twelve billion, three hundred seventeen million, seventy-two thousand, two hundred eighty-one".