2021304413 has 4 divisors (see below), whose sum is σ = 2075934300. Its totient is φ = 1966674528.

The previous prime is 2021304391. The next prime is 2021304421. The reversal of 2021304413 is 3144031202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 964599364 + 1056705049 = 31058^2 + 32507^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021304413 - 2²⁰ = 2020255837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021304613) 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 3 ways as a sum of consecutive naturals, for example, 27314888 + ... + 27314961.

It is an arithmetic number, because the mean of its divisors is an integer number (518983575).

Almost surely, 2^2021304413 is an apocalyptic number.

It is an amenable number.

2021304413 is a deficient number, since it is larger than the sum of its proper divisors (54629887).

2021304413 is an equidigital number, since it uses as much as digits as its factorization.

2021304413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54629886.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2021304413 is about 44958.9191707274. The cubic root of 2021304413 is about 1264.3789049006.

Adding to 2021304413 its reverse (3144031202), we get a palindrome (5165335615).

The spelling of 2021304413 in words is "two billion, twenty-one million, three hundred four thousand, four hundred thirteen".