115013309 has 2 divisors, whose sum is σ = 115013310. Its totient is φ = 115013308.

The previous prime is 115013303. The next prime is 115013351. The reversal of 115013309 is 903310511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95609284 + 19404025 = 9778^2 + 4405^2 .

It is an emirp because it is prime and its reverse (903310511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115013309 - 2²⁰ = 113964733 is a prime.

It is a super-2 number, since 2×115013309² = 26456122494258962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115013303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57506654 + 57506655.

It is an arithmetic number, because the mean of its divisors is an integer number (57506655).

Almost surely, 2^115013309 is an apocalyptic number.

It is an amenable number.

115013309 is a deficient number, since it is larger than the sum of its proper divisors (1).

115013309 is an equidigital number, since it uses as much as digits as its factorization.

115013309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 115013309 is about 10724.4258121356. The cubic root of 115013309 is about 486.3131720737.

The spelling of 115013309 in words is "one hundred fifteen million, thirteen thousand, three hundred nine".