2123310123 has 12 divisors (see below), whose sum is σ = 3345822168. Its totient is φ = 1286854560.

The previous prime is 2123310121. The next prime is 2123310131. The reversal of 2123310123 is 3210133212.

2123310123 is a `hidden beast` number, since 212 + 331 + 0 + 123 = 666.

It is not a de Polignac number, because 2123310123 - 2¹ = 2123310121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2123310096 and 2123310105.

It is not an unprimeable number, because it can be changed into a prime (2123310121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10723690 + ... + 10723887.

It is an arithmetic number, because the mean of its divisors is an integer number (278818514).

Almost surely, 2^2123310123 is an apocalyptic number.

2123310123 is a deficient number, since it is larger than the sum of its proper divisors (1222512045).

2123310123 is a wasteful number, since it uses less digits than its factorization.

2123310123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21447594 (or 21447591 counting only the distinct ones).

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

The square root of 2123310123 is about 46079.3893514226. The cubic root of 2123310123 is about 1285.2999089027.

Adding to 2123310123 its reverse (3210133212), we get a palindrome (5333443335).

Subtracting 2123310123 from its reverse (3210133212), we obtain a square (1086823089 = 32967²).

The spelling of 2123310123 in words is "two billion, one hundred twenty-three million, three hundred ten thousand, one hundred twenty-three".