2123103123 has 64 divisors (see below), whose sum is σ = 3448448640. Its totient is φ = 1285632000.

The previous prime is 2123103083. The next prime is 2123103133. The reversal of 2123103123 is 3213013212.

It is not a de Polignac number, because 2123103123 - 2¹⁰ = 2123102099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123103096 and 2123103105.

It is not an unprimeable number, because it can be changed into a prime (2123103133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1900161 + ... + 1901277.

It is an arithmetic number, because the mean of its divisors is an integer number (53882010).

Almost surely, 2^2123103123 is an apocalyptic number.

2123103123 is a deficient number, since it is larger than the sum of its proper divisors (1325345517).

2123103123 is a wasteful number, since it uses less digits than its factorization.

2123103123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285 (or 1279 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2123103123 is about 46077.1431731612. The cubic root of 2123103123 is about 1285.2581398861.

Adding to 2123103123 its reverse (3213013212), we get a palindrome (5336116335).

The spelling of 2123103123 in words is "two billion, one hundred twenty-three million, one hundred three thousand, one hundred twenty-three".