2011203103 has 16 divisors (see below), whose sum is σ = 2481424960. Its totient is φ = 1587361536.

The previous prime is 2011203091. The next prime is 2011203107. The reversal of 2011203103 is 3013021102.

It is a cyclic number.

It is not a de Polignac number, because 2011203103 - 2⁹ = 2011202591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011203107) 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, 10201 + ... + 64237.

It is an arithmetic number, because the mean of its divisors is an integer number (155089060).

Almost surely, 2^2011203103 is an apocalyptic number.

2011203103 is a deficient number, since it is larger than the sum of its proper divisors (470221857).

2011203103 is a wasteful number, since it uses less digits than its factorization.

2011203103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54466.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2011203103 is about 44846.4391340048. The cubic root of 2011203103 is about 1262.2691751714.

Adding to 2011203103 its reverse (3013021102), we get a palindrome (5024224205).

The spelling of 2011203103 in words is "two billion, eleven million, two hundred three thousand, one hundred three".