12131313317 has 2 divisors, whose sum is σ = 12131313318. Its totient is φ = 12131313316.

The previous prime is 12131313301. The next prime is 12131313353. The reversal of 12131313317 is 71331313121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10010802916 + 2120510401 = 100054^2 + 46049^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131313317 - 2⁴ = 12131313301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12131316317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065656658 + 6065656659.

It is an arithmetic number, because the mean of its divisors is an integer number (6065656659).

Almost surely, 2^12131313317 is an apocalyptic number.

It is an amenable number.

12131313317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131313317 is an equidigital number, since it uses as much as digits as its factorization.

12131313317 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 12131313317 its reverse (71331313121), we get a palindrome (83462626438).

The spelling of 12131313317 in words is "twelve billion, one hundred thirty-one million, three hundred thirteen thousand, three hundred seventeen".