2023303021 has 4 divisors (see below), whose sum is σ = 2025610972. Its totient is φ = 2020995072.

The previous prime is 2023303013. The next prime is 2023303067. The reversal of 2023303021 is 1203033202.

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 1320522921 + 702780100 = 36339^2 + 26510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2023303021 - 2³ = 2023303013 is a prime.

It is a super-2 number, since 2×2023303021² = 8187510229575452882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2023302986 and 2023303004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2023303091) 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, 1152660 + ... + 1154413.

It is an arithmetic number, because the mean of its divisors is an integer number (506402743).

Almost surely, 2^2023303021 is an apocalyptic number.

It is an amenable number.

2023303021 is a deficient number, since it is larger than the sum of its proper divisors (2307951).

2023303021 is an equidigital number, since it uses as much as digits as its factorization.

2023303021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307950.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 2023303021 is about 44981.1407258642. The cubic root of 2023303021 is about 1264.7954948612.

Adding to 2023303021 its reverse (1203033202), we get a palindrome (3226336223).

The spelling of 2023303021 in words is "two billion, twenty-three million, three hundred three thousand, twenty-one".