13312323217 has 2 divisors, whose sum is σ = 13312323218. Its totient is φ = 13312323216.

The previous prime is 13312323187. The next prime is 13312323221. The reversal of 13312323217 is 71232321331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12119587921 + 1192735296 = 110089^2 + 34536^2 .

It is a cyclic number.

It is not a de Polignac number, because 13312323217 - 2¹⁵ = 13312290449 is a prime.

It is not a weakly prime, because it can be changed into another prime (13312323257) 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 as a sum of consecutive naturals, namely, 6656161608 + 6656161609.

It is an arithmetic number, because the mean of its divisors is an integer number (6656161609).

Almost surely, 2^13312323217 is an apocalyptic number.

It is an amenable number.

13312323217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13312323217 is an equidigital number, since it uses as much as digits as its factorization.

13312323217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

Adding to 13312323217 its reverse (71232321331), we get a palindrome (84544644548).

The spelling of 13312323217 in words is "thirteen billion, three hundred twelve million, three hundred twenty-three thousand, two hundred seventeen".