2113243043 has 4 divisors (see below), whose sum is σ = 2129882880. Its totient is φ = 2096603208.

The previous prime is 2113243039. The next prime is 2113243051. The reversal of 2113243043 is 3403423112.

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 2113243043 - 2² = 2113243039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113243073) 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, 8319728 + ... + 8319981.

It is an arithmetic number, because the mean of its divisors is an integer number (532470720).

Almost surely, 2^2113243043 is an apocalyptic number.

2113243043 is a deficient number, since it is larger than the sum of its proper divisors (16639837).

2113243043 is a wasteful number, since it uses less digits than its factorization.

2113243043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16639836.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2113243043 is about 45970.0233086737. The cubic root of 2113243043 is about 1283.2653936860.

Adding to 2113243043 its reverse (3403423112), we get a palindrome (5516666155).

The spelling of 2113243043 in words is "two billion, one hundred thirteen million, two hundred forty-three thousand, forty-three".