115541431 has 4 divisors (see below), whose sum is σ = 117721512. Its totient is φ = 113361352.

The previous prime is 115541359. The next prime is 115541441. The reversal of 115541431 is 134145511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134145511 = 919 ⋅145969.

It is a cyclic number.

It is not a de Polignac number, because 115541431 - 2⁷ = 115541303 is a prime.

It is a super-2 number, since 2×115541431² = 26699644555055522, 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 = 115541396 and 115541405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115541441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089961 + ... + 1090066.

It is an arithmetic number, because the mean of its divisors is an integer number (29430378).

Almost surely, 2^115541431 is an apocalyptic number.

115541431 is a deficient number, since it is larger than the sum of its proper divisors (2180081).

115541431 is an equidigital number, since it uses as much as digits as its factorization.

115541431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180080.

The product of its digits is 1200, while the sum is 25.

The square root of 115541431 is about 10749.0200018420. The cubic root of 115541431 is about 487.0563920717.

Adding to 115541431 its reverse (134145511), we get a palindrome (249686942).

The spelling of 115541431 in words is "one hundred fifteen million, five hundred forty-one thousand, four hundred thirty-one".