2123204329 has 4 divisors (see below), whose sum is σ = 2123579776. Its totient is φ = 2122828884.

The previous prime is 2123204299. The next prime is 2123204333. The reversal of 2123204329 is 9234023212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2123204329 - 2⁵ = 2123204297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123204297 and 2123204306.

It is not an unprimeable number, because it can be changed into a prime (2123204389) 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, 179109 + ... + 190594.

It is an arithmetic number, because the mean of its divisors is an integer number (530894944).

Almost surely, 2^2123204329 is an apocalyptic number.

It is an amenable number.

2123204329 is a deficient number, since it is larger than the sum of its proper divisors (375447).

2123204329 is an equidigital number, since it uses as much as digits as its factorization.

2123204329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375446.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2123204329 is about 46078.2413835424. The cubic root of 2123204329 is about 1285.2785618441.

The spelling of 2123204329 in words is "two billion, one hundred twenty-three million, two hundred four thousand, three hundred twenty-nine".