115305109 has 2 divisors, whose sum is σ = 115305110. Its totient is φ = 115305108.

The previous prime is 115305023. The next prime is 115305119. The reversal of 115305109 is 901503511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105001009 + 10304100 = 10247^2 + 3210^2 .

It is a cyclic number.

It is not a de Polignac number, because 115305109 - 2¹³ = 115296917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115305119) 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, 57652554 + 57652555.

It is an arithmetic number, because the mean of its divisors is an integer number (57652555).

Almost surely, 2^115305109 is an apocalyptic number.

It is an amenable number.

115305109 is a deficient number, since it is larger than the sum of its proper divisors (1).

115305109 is an equidigital number, since it uses as much as digits as its factorization.

115305109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 115305109 is about 10738.0216520549. The cubic root of 115305109 is about 486.7240994228.

The spelling of 115305109 in words is "one hundred fifteen million, three hundred five thousand, one hundred nine".