115312129 has 2 divisors, whose sum is σ = 115312130. Its totient is φ = 115312128.

The previous prime is 115312117. The next prime is 115312151. The reversal of 115312129 is 921213511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110817729 + 4494400 = 10527^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 115312129 - 2⁵ = 115312097 is a prime.

It is not a weakly prime, because it can be changed into another prime (115312199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57656064 + 57656065.

It is an arithmetic number, because the mean of its divisors is an integer number (57656065).

Almost surely, 2^115312129 is an apocalyptic number.

It is an amenable number.

115312129 is a deficient number, since it is larger than the sum of its proper divisors (1).

115312129 is an equidigital number, since it uses as much as digits as its factorization.

115312129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 25.

The square root of 115312129 is about 10738.3485229341. The cubic root of 115312129 is about 486.7339767933.

The spelling of 115312129 in words is "one hundred fifteen million, three hundred twelve thousand, one hundred twenty-nine".