13211331317 has 2 divisors, whose sum is σ = 13211331318. Its totient is φ = 13211331316.

The previous prime is 13211331277. The next prime is 13211331323. The reversal of 13211331317 is 71313311231.

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., 8858762641 + 4352568676 = 94121^2 + 65974^2 .

It is an emirp because it is prime and its reverse (71313311231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13211331317 - 2³⁰ = 12137589493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13211331377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605665658 + 6605665659.

It is an arithmetic number, because the mean of its divisors is an integer number (6605665659).

Almost surely, 2^13211331317 is an apocalyptic number.

It is an amenable number.

13211331317 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211331317 is an equidigital number, since it uses as much as digits as its factorization.

13211331317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 26.

Adding to 13211331317 its reverse (71313311231), we get a palindrome (84524642548).

The spelling of 13211331317 in words is "thirteen billion, two hundred eleven million, three hundred thirty-one thousand, three hundred seventeen".