2103323123 has 16 divisors (see below), whose sum is σ = 2493219840. Its totient is φ = 1753034400.

The previous prime is 2103323069. The next prime is 2103323141. The reversal of 2103323123 is 3213233012.

It is a cyclic number.

It is not a de Polignac number, because 2103323123 - 2⁶ = 2103323059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103323095 and 2103323104.

It is not an unprimeable number, because it can be changed into a prime (2103323143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155840 + ... + 168797.

It is an arithmetic number, because the mean of its divisors is an integer number (155826240).

Almost surely, 2^2103323123 is an apocalyptic number.

2103323123 is a deficient number, since it is larger than the sum of its proper divisors (389896717).

2103323123 is a wasteful number, since it uses less digits than its factorization.

2103323123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324698.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2103323123 is about 45862.0008612795. Note that the first 3 decimals coincide. The cubic root of 2103323123 is about 1281.2542886932.

Adding to 2103323123 its reverse (3213233012), we get a palindrome (5316556135).

The spelling of 2103323123 in words is "two billion, one hundred three million, three hundred twenty-three thousand, one hundred twenty-three".