115240813 has 2 divisors, whose sum is σ = 115240814. Its totient is φ = 115240812.

The previous prime is 115240777. The next prime is 115240823. The reversal of 115240813 is 318042511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109872324 + 5368489 = 10482^2 + 2317^2 .

It is a cyclic number.

It is not a de Polignac number, because 115240813 - 2¹⁷ = 115109741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115240823) 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, 57620406 + 57620407.

It is an arithmetic number, because the mean of its divisors is an integer number (57620407).

Almost surely, 2^115240813 is an apocalyptic number.

It is an amenable number.

115240813 is a deficient number, since it is larger than the sum of its proper divisors (1).

115240813 is an equidigital number, since it uses as much as digits as its factorization.

115240813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 115240813 is about 10735.0273870168. The cubic root of 115240813 is about 486.6336141832.

The spelling of 115240813 in words is "one hundred fifteen million, two hundred forty thousand, eight hundred thirteen".