2113243104043 has 4 divisors (see below), whose sum is σ = 2113564418680. Its totient is φ = 2112921789408.

The previous prime is 2113243104031. The next prime is 2113243104097. The reversal of 2113243104043 is 3404013423112.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113243104043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113243104023) 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, 160647453 + ... + 160660606.

It is an arithmetic number, because the mean of its divisors is an integer number (528391104670).

Almost surely, 2^{2113243104043} is an apocalyptic number.

2113243104043 is a deficient number, since it is larger than the sum of its proper divisors (321314637).

2113243104043 is an equidigital number, since it uses as much as digits as its factorization.

2113243104043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321314636.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 2113243104043 its reverse (3404013423112), we get a palindrome (5517256527155).

The spelling of 2113243104043 in words is "two trillion, one hundred thirteen billion, two hundred forty-three million, one hundred four thousand, forty-three".