5203203121 has 4 divisors (see below), whose sum is σ = 5276487744. Its totient is φ = 5129918500.

The previous prime is 5203203077. The next prime is 5203203139. The reversal of 5203203121 is 1213023025.

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 5203203121 - 2²⁷ = 5068985393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5203203721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36642205 + ... + 36642346.

It is an arithmetic number, because the mean of its divisors is an integer number (1319121936).

Almost surely, 2^5203203121 is an apocalyptic number.

It is an amenable number.

5203203121 is a deficient number, since it is larger than the sum of its proper divisors (73284623).

5203203121 is an equidigital number, since it uses as much as digits as its factorization.

5203203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73284622.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 5203203121 is about 72133.2317382217. The cubic root of 5203203121 is about 1732.8338644185.

Adding to 5203203121 its reverse (1213023025), we get a palindrome (6416226146).

The spelling of 5203203121 in words is "five billion, two hundred three million, two hundred three thousand, one hundred twenty-one".