20043043103 has 4 divisors (see below), whose sum is σ = 20059567848. Its totient is φ = 20026518360.

The previous prime is 20043043067. The next prime is 20043043117. The reversal of 20043043103 is 30134034002.

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 20043043103 - 2²⁰ = 20041994527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043043003) 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, 8260553 + ... + 8262978.

It is an arithmetic number, because the mean of its divisors is an integer number (5014891962).

Almost surely, 2^20043043103 is an apocalyptic number.

20043043103 is a deficient number, since it is larger than the sum of its proper divisors (16524745).

20043043103 is a wasteful number, since it uses less digits than its factorization.

20043043103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16524744.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20043043103 its reverse (30134034002), we get a palindrome (50177077105).

The spelling of 20043043103 in words is "twenty billion, forty-three million, forty-three thousand, one hundred three".