20103423203 has 4 divisors (see below), whose sum is σ = 20236558608. Its totient is φ = 19970287800.

The previous prime is 20103423161. The next prime is 20103423227. The reversal of 20103423203 is 30232430102.

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 20103423203 - 2¹⁰ = 20103422179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20103423293) 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, 66567476 + ... + 66567777.

It is an arithmetic number, because the mean of its divisors is an integer number (5059139652).

Almost surely, 2^20103423203 is an apocalyptic number.

20103423203 is a deficient number, since it is larger than the sum of its proper divisors (133135405).

20103423203 is a wasteful number, since it uses less digits than its factorization.

20103423203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133135404.

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

Adding to 20103423203 its reverse (30232430102), we get a palindrome (50335853305).

The spelling of 20103423203 in words is "twenty billion, one hundred three million, four hundred twenty-three thousand, two hundred three".