2043303021 has 12 divisors (see below), whose sum is σ = 2961944700. Its totient is φ = 1357352640.

The previous prime is 2043303013. The next prime is 2043303061. The reversal of 2043303021 is 1203033402.

It can be written as a sum of positive squares in 2 ways, for example, as 583222500 + 1460080521 = 24150^2 + 38211^2 .

It is not a de Polignac number, because 2043303021 - 2³ = 2043303013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2043302985 and 2043303003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043303001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401446 + ... + 406503.

It is an arithmetic number, because the mean of its divisors is an integer number (246828725).

Almost surely, 2^2043303021 is an apocalyptic number.

It is an amenable number.

2043303021 is a deficient number, since it is larger than the sum of its proper divisors (918641679).

2043303021 is a wasteful number, since it uses less digits than its factorization.

2043303021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808236 (or 808233 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 2043303021 is about 45202.9094306993. The cubic root of 2043303021 is about 1268.9492664898.

Adding to 2043303021 its reverse (1203033402), we get a palindrome (3246336423).

The spelling of 2043303021 in words is "two billion, forty-three million, three hundred three thousand, twenty-one".