20203103 has 6 divisors (see below), whose sum is σ = 20876832. Its totient is φ = 19550460.

The previous prime is 20203093. The next prime is 20203129. The reversal of 20203103 is 30130202.

It is not a de Polignac number, because 20203103 - 2¹² = 20199007 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 (20203133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9551 + ... + 11472.

It is an arithmetic number, because the mean of its divisors is an integer number (3479472).

Almost surely, 2^20203103 is an apocalyptic number.

20203103 is a deficient number, since it is larger than the sum of its proper divisors (673729).

20203103 is an equidigital number, since it uses as much as digits as its factorization.

20203103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21085 (or 21054 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20203103 is about 4494.7862018121. The cubic root of 20203103 is about 272.3575126919.

Adding to 20203103 its reverse (30130202), we get a palindrome (50333305).

The spelling of 20203103 in words is "twenty million, two hundred three thousand, one hundred three".