2123340403 has 2 divisors, whose sum is σ = 2123340404. Its totient is φ = 2123340402.

The previous prime is 2123340397. The next prime is 2123340451. The reversal of 2123340403 is 3040433212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2123340403 - 2⁹ = 2123339891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123343403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061670201 + 1061670202.

It is an arithmetic number, because the mean of its divisors is an integer number (1061670202).

Almost surely, 2^2123340403 is an apocalyptic number.

2123340403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123340403 is an equidigital number, since it uses as much as digits as its factorization.

2123340403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 2123340403 is about 46079.7179136331. The cubic root of 2123340403 is about 1285.3060186549.

Adding to 2123340403 its reverse (3040433212), we get a palindrome (5163773615).

The spelling of 2123340403 in words is "two billion, one hundred twenty-three million, three hundred forty thousand, four hundred three".