2103111023 has 4 divisors (see below), whose sum is σ = 2264888808. Its totient is φ = 1941333240.

The previous prime is 2103111013. The next prime is 2103111071. The reversal of 2103111023 is 3201113012.

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 2103111023 - 2¹⁸ = 2102848879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2103110989 and 2103111007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103111013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80888873 + ... + 80888898.

It is an arithmetic number, because the mean of its divisors is an integer number (566222202).

Almost surely, 2^2103111023 is an apocalyptic number.

2103111023 is a deficient number, since it is larger than the sum of its proper divisors (161777785).

2103111023 is a wasteful number, since it uses less digits than its factorization.

2103111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161777784.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2103111023 is about 45859.6884311265. The cubic root of 2103111023 is about 1281.2112198360.

Adding to 2103111023 its reverse (3201113012), we get a palindrome (5304224035).

The spelling of 2103111023 in words is "two billion, one hundred three million, one hundred eleven thousand, twenty-three".