115311617 has 2 divisors, whose sum is σ = 115311618. Its totient is φ = 115311616.

The previous prime is 115311607. The next prime is 115311619. The reversal of 115311617 is 716113511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67092481 + 48219136 = 8191^2 + 6944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115311617 is a prime.

Together with 115311619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115311619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57655808 + 57655809.

It is an arithmetic number, because the mean of its divisors is an integer number (57655809).

Almost surely, 2^115311617 is an apocalyptic number.

It is an amenable number.

115311617 is a deficient number, since it is larger than the sum of its proper divisors (1).

115311617 is an equidigital number, since it uses as much as digits as its factorization.

115311617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630, while the sum is 26.

The square root of 115311617 is about 10738.3246831151. The cubic root of 115311617 is about 486.7332564060.

The spelling of 115311617 in words is "one hundred fifteen million, three hundred eleven thousand, six hundred seventeen".