2100203203 has 4 divisors (see below), whose sum is σ = 2400232240. Its totient is φ = 1800174168.

The previous prime is 2100203201. The next prime is 2100203249. The reversal of 2100203203 is 3023020012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100203203 - 2¹ = 2100203201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100203201) 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, 150014508 + ... + 150014521.

It is an arithmetic number, because the mean of its divisors is an integer number (600058060).

Almost surely, 2^2100203203 is an apocalyptic number.

2100203203 is a deficient number, since it is larger than the sum of its proper divisors (300029037).

2100203203 is an equidigital number, since it uses as much as digits as its factorization.

2100203203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300029036.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 2100203203 is about 45827.9740224243. The cubic root of 2100203203 is about 1280.6204680249.

Adding to 2100203203 its reverse (3023020012), we get a palindrome (5123223215).

The spelling of 2100203203 in words is "two billion, one hundred million, two hundred three thousand, two hundred three".