115305143 has 2 divisors, whose sum is σ = 115305144. Its totient is φ = 115305142.

The previous prime is 115305139. The next prime is 115305163. The reversal of 115305143 is 341503511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115305143 - 2² = 115305139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115305163) 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, 57652571 + 57652572.

It is an arithmetic number, because the mean of its divisors is an integer number (57652572).

Almost surely, 2^115305143 is an apocalyptic number.

115305143 is a deficient number, since it is larger than the sum of its proper divisors (1).

115305143 is an equidigital number, since it uses as much as digits as its factorization.

115305143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 115305143 is about 10738.0232352142. The cubic root of 115305143 is about 486.7241472629.

Adding to 115305143 its reverse (341503511), we get a palindrome (456808654).

The spelling of 115305143 in words is "one hundred fifteen million, three hundred five thousand, one hundred forty-three".