2103204321 has 6 divisors (see below), whose sum is σ = 3037961810. Its totient is φ = 1402136208.

The previous prime is 2103204319. The next prime is 2103204391. The reversal of 2103204321 is 1234023012.

2103204321 is a `hidden beast` number, since 21 + 0 + 320 + 4 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1861059600 + 242144721 = 43140^2 + 15561^2 .

It is not a de Polignac number, because 2103204321 - 2¹ = 2103204319 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2103204294 and 2103204303.

It is not an unprimeable number, because it can be changed into a prime (2103204391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116844676 + ... + 116844693.

Almost surely, 2^2103204321 is an apocalyptic number.

It is an amenable number.

2103204321 is a deficient number, since it is larger than the sum of its proper divisors (934757489).

2103204321 is a wasteful number, since it uses less digits than its factorization.

2103204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233689375 (or 233689372 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2103204321 is about 45860.7056312918. The cubic root of 2103204321 is about 1281.2301652103.

Adding to 2103204321 its reverse (1234023012), we get a palindrome (3337227333).

The spelling of 2103204321 in words is "two billion, one hundred three million, two hundred four thousand, three hundred twenty-one".