115831257 has 8 divisors (see below), whose sum is σ = 154497984. Its totient is φ = 77192688.

The previous prime is 115831241. The next prime is 115831267. The reversal of 115831257 is 752138511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115831257 - 2⁴ = 115831241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115831267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6028 + ... + 16370.

It is an arithmetic number, because the mean of its divisors is an integer number (19312248).

Almost surely, 2^115831257 is an apocalyptic number.

It is an amenable number.

115831257 is a deficient number, since it is larger than the sum of its proper divisors (38666727).

115831257 is a wasteful number, since it uses less digits than its factorization.

115831257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14079.

The product of its digits is 8400, while the sum is 33.

The square root of 115831257 is about 10762.4930661999. The cubic root of 115831257 is about 487.4632987492.

Adding to 115831257 its reverse (752138511), we get a palindrome (867969768).

The spelling of 115831257 in words is "one hundred fifteen million, eight hundred thirty-one thousand, two hundred fifty-seven".