115533231 has 32 divisors (see below), whose sum is σ = 171916800. Its totient is φ = 68428800.

The previous prime is 115533179. The next prime is 115533247. The reversal of 115533231 is 132335511.

It is not a de Polignac number, because 115533231 - 2¹⁴ = 115516847 is a prime.

It is a super-2 number, since 2×115533231² = 26695854930598722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115533251) 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 31 ways as a sum of consecutive naturals, for example, 479271 + ... + 479511.

It is an arithmetic number, because the mean of its divisors is an integer number (5372400).

Almost surely, 2^115533231 is an apocalyptic number.

115533231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

115533231 is a deficient number, since it is larger than the sum of its proper divisors (56383569).

115533231 is a wasteful number, since it uses less digits than its factorization.

115533231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its digits is 1350, while the sum is 24.

The square root of 115533231 is about 10748.6385649532. The cubic root of 115533231 is about 487.0448696338.

Adding to 115533231 its reverse (132335511), we get a palindrome (247868742).

The spelling of 115533231 in words is "one hundred fifteen million, five hundred thirty-three thousand, two hundred thirty-one".