115071391 has 16 divisors (see below), whose sum is σ = 126655200. Its totient is φ = 104122368.

The previous prime is 115071373. The next prime is 115071401. The reversal of 115071391 is 193170511.

It is a cyclic number.

It is not a de Polignac number, because 115071391 - 2⁷ = 115071263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115071301) 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 in 15 ways as a sum of consecutive naturals, for example, 52371 + ... + 54523.

It is an arithmetic number, because the mean of its divisors is an integer number (7915950).

Almost surely, 2^115071391 is an apocalyptic number.

115071391 is a deficient number, since it is larger than the sum of its proper divisors (11583809).

115071391 is a wasteful number, since it uses less digits than its factorization.

115071391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 115071391 is about 10727.1334008672. The cubic root of 115071391 is about 486.3950214077.

The spelling of 115071391 in words is "one hundred fifteen million, seventy-one thousand, three hundred ninety-one".