20020203103 has 4 divisors (see below), whose sum is σ = 20020952728. Its totient is φ = 20019453480.

The previous prime is 20020203101. The next prime is 20020203113. The reversal of 20020203103 is 30130202002.

It is a happy number.

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 20020203103 - 2¹ = 20020203101 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 (20020203101) 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, 333213 + ... + 388678.

It is an arithmetic number, because the mean of its divisors is an integer number (5005238182).

Almost surely, 2^20020203103 is an apocalyptic number.

20020203103 is a deficient number, since it is larger than the sum of its proper divisors (749625).

20020203103 is an equidigital number, since it uses as much as digits as its factorization.

20020203103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749624.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20020203103 its reverse (30130202002), we get a palindrome (50150405105).

The spelling of 20020203103 in words is "twenty billion, twenty million, two hundred three thousand, one hundred three".