2303264021 has 4 divisors (see below), whose sum is σ = 2303398092. Its totient is φ = 2303129952.

The previous prime is 2303263987. The next prime is 2303264087. The reversal of 2303264021 is 1204623032.

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 798910225 + 1504353796 = 28265^2 + 38786^2 .

It is a cyclic number.

It is not a de Polignac number, because 2303264021 - 2²⁶ = 2236155157 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 (2303263021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36686 + ... + 77151.

It is an arithmetic number, because the mean of its divisors is an integer number (575849523).

Almost surely, 2^2303264021 is an apocalyptic number.

It is an amenable number.

2303264021 is a deficient number, since it is larger than the sum of its proper divisors (134071).

2303264021 is a wasteful number, since it uses less digits than its factorization.

2303264021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134070.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2303264021 is about 47992.3329397519. The cubic root of 2303264021 is about 1320.6302509514.

Adding to 2303264021 its reverse (1204623032), we get a palindrome (3507887053).

The spelling of 2303264021 in words is "two billion, three hundred three million, two hundred sixty-four thousand, twenty-one".