8291111317 has 2 divisors, whose sum is σ = 8291111318. Its totient is φ = 8291111316.

The previous prime is 8291111303. The next prime is 8291111329. The reversal of 8291111317 is 7131111928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7159528996 + 1131582321 = 84614^2 + 33639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8291111317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8291115317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4145555658 + 4145555659.

It is an arithmetic number, because the mean of its divisors is an integer number (4145555659).

Almost surely, 2^8291111317 is an apocalyptic number.

It is an amenable number.

8291111317 is a deficient number, since it is larger than the sum of its proper divisors (1).

8291111317 is an equidigital number, since it uses as much as digits as its factorization.

8291111317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 34.

The square root of 8291111317 is about 91055.5397381181. The cubic root of 8291111317 is about 2023.9708283074.

The spelling of 8291111317 in words is "eight billion, two hundred ninety-one million, one hundred eleven thousand, three hundred seventeen".