2043203521 has 8 divisors (see below), whose sum is σ = 2112551424. Its totient is φ = 1974070560.

The previous prime is 2043203509. The next prime is 2043203537. The reversal of 2043203521 is 1253023402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2043203521 - 2⁵ = 2043203489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2043203492 and 2043203501.

It is not an unprimeable number, because it can be changed into a prime (2043203621) 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 7 ways as a sum of consecutive naturals, for example, 34285 + ... + 72538.

It is an arithmetic number, because the mean of its divisors is an integer number (264068928).

Almost surely, 2^2043203521 is an apocalyptic number.

It is an amenable number.

2043203521 is a deficient number, since it is larger than the sum of its proper divisors (69347903).

2043203521 is a wasteful number, since it uses less digits than its factorization.

2043203521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107471.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 2043203521 is about 45201.8088244265. The cubic root of 2043203521 is about 1268.9286687125.

Adding to 2043203521 its reverse (1253023402), we get a palindrome (3296226923).

The spelling of 2043203521 in words is "two billion, forty-three million, two hundred three thousand, five hundred twenty-one".