20103111303 has 16 divisors (see below), whose sum is σ = 30960942336. Its totient is φ = 11467015040.

The previous prime is 20103111289. The next prime is 20103111341. The reversal of 20103111303 is 30311130102.

It is a cyclic number.

It is not a de Polignac number, because 20103111303 - 2¹⁸ = 20102849159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103115303) 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 15 ways as a sum of consecutive naturals, for example, 17916651 + ... + 17917772.

It is an arithmetic number, because the mean of its divisors is an integer number (1935058896).

Almost surely, 2^20103111303 is an apocalyptic number.

20103111303 is a deficient number, since it is larger than the sum of its proper divisors (10857831033).

20103111303 is a wasteful number, since it uses less digits than its factorization.

20103111303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35834454.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 20103111303 its reverse (30311130102), we get a palindrome (50414241405).

The spelling of 20103111303 in words is "twenty billion, one hundred three million, one hundred eleven thousand, three hundred three".