115231012232509 has 2 divisors, whose sum is σ = 115231012232510. Its totient is φ = 115231012232508.

The previous prime is 115231012232449. The next prime is 115231012232521. The reversal of 115231012232509 is 905232210132511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73080442664100 + 42150569568409 = 8548710^2 + 6492347^2 .

It is a cyclic number.

It is not a de Polignac number, because 115231012232509 - 2⁹ = 115231012231997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115231012232569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57615506116254 + 57615506116255.

It is an arithmetic number, because the mean of its divisors is an integer number (57615506116255).

Almost surely, 2^{115231012232509} is an apocalyptic number.

It is an amenable number.

115231012232509 is a deficient number, since it is larger than the sum of its proper divisors (1).

115231012232509 is an equidigital number, since it uses as much as digits as its factorization.

115231012232509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 115231012232509 in words is "one hundred fifteen trillion, two hundred thirty-one billion, twelve million, two hundred thirty-two thousand, five hundred nine".