1113443243 has 4 divisors (see below), whose sum is σ = 1214665368. Its totient is φ = 1012221120.

The previous prime is 1113443209. The next prime is 1113443249. The reversal of 1113443243 is 3423443111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3423443111 = 11 ⋅311222101.

It is a cyclic number.

It is not a de Polignac number, because 1113443243 - 2⁸ = 1113442987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113443249) 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 3 ways as a sum of consecutive naturals, for example, 50611046 + ... + 50611067.

It is an arithmetic number, because the mean of its divisors is an integer number (303666342).

Almost surely, 2^1113443243 is an apocalyptic number.

1113443243 is a deficient number, since it is larger than the sum of its proper divisors (101222125).

1113443243 is a wasteful number, since it uses less digits than its factorization.

1113443243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101222124.

The product of its digits is 3456, while the sum is 26.

The square root of 1113443243 is about 33368.2969748233. The cubic root of 1113443243 is about 1036.4683098508.

Adding to 1113443243 its reverse (3423443111), we get a palindrome (4536886354).

The spelling of 1113443243 in words is "one billion, one hundred thirteen million, four hundred forty-three thousand, two hundred forty-three".