2013123103 has 4 divisors (see below), whose sum is σ = 2023342200. Its totient is φ = 2002904008.

The previous prime is 2013123097. The next prime is 2013123107. The reversal of 2013123103 is 3013213102.

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 2013123103 - 2²⁵ = 1979568671 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 (2013123107) 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, 5109253 + ... + 5109646.

It is an arithmetic number, because the mean of its divisors is an integer number (505835550).

Almost surely, 2^2013123103 is an apocalyptic number.

2013123103 is a deficient number, since it is larger than the sum of its proper divisors (10219097).

2013123103 is a wasteful number, since it uses less digits than its factorization.

2013123103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10219096.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2013123103 is about 44867.8404093622. The cubic root of 2013123103 is about 1262.6707235453.

Adding to 2013123103 its reverse (3013213102), we get a palindrome (5026336205).

It can be divided in two parts, 20131 and 23103, that added together give a palindrome (43234).

The spelling of 2013123103 in words is "two billion, thirteen million, one hundred twenty-three thousand, one hundred three".