115332431 has 4 divisors (see below), whose sum is σ = 119052864. Its totient is φ = 111612000.

The previous prime is 115332421. The next prime is 115332457. The reversal of 115332431 is 134233511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134233511 = 757 ⋅177323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115332431 is a prime.

It is a super-2 number, since 2×115332431² = 26603139280739522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115332397 and 115332406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115332421) 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 3 ways as a sum of consecutive naturals, for example, 1860170 + ... + 1860231.

It is an arithmetic number, because the mean of its divisors is an integer number (29763216).

Almost surely, 2^115332431 is an apocalyptic number.

115332431 is a deficient number, since it is larger than the sum of its proper divisors (3720433).

115332431 is an equidigital number, since it uses as much as digits as its factorization.

115332431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720432.

The product of its digits is 1080, while the sum is 23.

The square root of 115332431 is about 10739.2937849749. The cubic root of 115332431 is about 486.7625401179.

Adding to 115332431 its product of digits (1080), we get a palindrome (115333511).

Adding to 115332431 its reverse (134233511), we get a palindrome (249565942).

The spelling of 115332431 in words is "one hundred fifteen million, three hundred thirty-two thousand, four hundred thirty-one".