113431243 has 4 divisors (see below), whose sum is σ = 114110640. Its totient is φ = 112751848.

The previous prime is 113431231. The next prime is 113431303. The reversal of 113431243 is 342134311.

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

It is a cyclic number.

It is not a de Polignac number, because 113431243 - 2⁹ = 113430731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116431243) 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, 339448 + ... + 339781.

It is an arithmetic number, because the mean of its divisors is an integer number (28527660).

Almost surely, 2^113431243 is an apocalyptic number.

113431243 is a deficient number, since it is larger than the sum of its proper divisors (679397).

113431243 is an equidigital number, since it uses as much as digits as its factorization.

113431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679396.

The product of its digits is 864, while the sum is 22.

The square root of 113431243 is about 10650.4104615738. The cubic root of 113431243 is about 484.0730415345.

Adding to 113431243 its reverse (342134311), we get a palindrome (455565554).

The spelling of 113431243 in words is "one hundred thirteen million, four hundred thirty-one thousand, two hundred forty-three".