2123311103 has 4 divisors (see below), whose sum is σ = 2143155240. Its totient is φ = 2103466968.

The previous prime is 2123311087. The next prime is 2123311109. The reversal of 2123311103 is 3011133212.

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 2123311103 - 2⁴ = 2123311087 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 (2123311109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9921908 + ... + 9922121.

It is an arithmetic number, because the mean of its divisors is an integer number (535788810).

Almost surely, 2^2123311103 is an apocalyptic number.

2123311103 is a deficient number, since it is larger than the sum of its proper divisors (19844137).

2123311103 is a wasteful number, since it uses less digits than its factorization.

2123311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19844136.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2123311103 is about 46079.3999852429. The cubic root of 2123311103 is about 1285.3001066433.

Adding to 2123311103 its reverse (3011133212), we get a palindrome (5134444315).

The spelling of 2123311103 in words is "two billion, one hundred twenty-three million, three hundred eleven thousand, one hundred three".