2021323323 has 4 divisors (see below), whose sum is σ = 2695097768. Its totient is φ = 1347548880.

The previous prime is 2021323279. The next prime is 2021323333. The reversal of 2021323323 is 3233231202.

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

It is not a de Polignac number, because 2021323323 - 2⁹ = 2021322811 is a prime.

It is a super-2 number, since 2×2021323323² = 8171495952207524658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021323323.

It is not an unprimeable number, because it can be changed into a prime (2021323333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336887218 + ... + 336887223.

It is an arithmetic number, because the mean of its divisors is an integer number (673774442).

Almost surely, 2^2021323323 is an apocalyptic number.

2021323323 is a deficient number, since it is larger than the sum of its proper divisors (673774445).

2021323323 is an equidigital number, since it uses as much as digits as its factorization.

2021323323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673774444.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 2021323323 is about 44959.1294733339. The cubic root of 2021323323 is about 1264.3828477886.

Adding to 2021323323 its reverse (3233231202), we get a palindrome (5254554525).

The spelling of 2021323323 in words is "two billion, twenty-one million, three hundred twenty-three thousand, three hundred twenty-three".