115542431 has 2 divisors, whose sum is σ = 115542432. Its totient is φ = 115542430.

The previous prime is 115542377. The next prime is 115542433. The reversal of 115542431 is 134245511.

It is a strong prime.

It is an emirp because it is prime and its reverse (134245511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115542431 - 2¹⁸ = 115280287 is a prime.

It is a super-2 number, since 2×115542431² = 26700106722779522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 115542433, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115542431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115542433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57771215 + 57771216.

It is an arithmetic number, because the mean of its divisors is an integer number (57771216).

Almost surely, 2^115542431 is an apocalyptic number.

115542431 is a deficient number, since it is larger than the sum of its proper divisors (1).

115542431 is an equidigital number, since it uses as much as digits as its factorization.

115542431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 115542431 is about 10749.0665176098. The cubic root of 115542431 is about 487.0577972097.

Adding to 115542431 its reverse (134245511), we get a palindrome (249787942).

The spelling of 115542431 in words is "one hundred fifteen million, five hundred forty-two thousand, four hundred thirty-one".