113242431 has 4 divisors (see below), whose sum is σ = 150989912. Its totient is φ = 75494952.

The previous prime is 113242429. The next prime is 113242463. The reversal of 113242431 is 134242311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 113242431 - 2¹ = 113242429 is a prime.

It is a super-2 number, since 2×113242431² = 25647696357579522, 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 = 113242398 and 113242407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113242421) 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, 18873736 + ... + 18873741.

It is an arithmetic number, because the mean of its divisors is an integer number (37747478).

Almost surely, 2^113242431 is an apocalyptic number.

113242431 is a deficient number, since it is larger than the sum of its proper divisors (37747481).

113242431 is an equidigital number, since it uses as much as digits as its factorization.

113242431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37747480.

The product of its digits is 576, while the sum is 21.

The square root of 113242431 is about 10641.5426983121. The cubic root of 113242431 is about 483.8043044086.

Adding to 113242431 its reverse (134242311), we get a palindrome (247484742).

The spelling of 113242431 in words is "one hundred thirteen million, two hundred forty-two thousand, four hundred thirty-one".