115315117 has 2 divisors, whose sum is σ = 115315118. Its totient is φ = 115315116.

The previous prime is 115315099. The next prime is 115315139. The reversal of 115315117 is 711513511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70879561 + 44435556 = 8419^2 + 6666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115315117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115315091 and 115315100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115315177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57657558 + 57657559.

It is an arithmetic number, because the mean of its divisors is an integer number (57657559).

Almost surely, 2^115315117 is an apocalyptic number.

It is an amenable number.

115315117 is a deficient number, since it is larger than the sum of its proper divisors (1).

115315117 is an equidigital number, since it uses as much as digits as its factorization.

115315117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 525, while the sum is 25.

The square root of 115315117 is about 10738.4876495715. The cubic root of 115315117 is about 486.7381808858.

Adding to 115315117 its reverse (711513511), we get a palindrome (826828628).

The spelling of 115315117 in words is "one hundred fifteen million, three hundred fifteen thousand, one hundred seventeen".