2303440144021 has 4 divisors (see below), whose sum is σ = 2316166332844. Its totient is φ = 2290713955200.

The previous prime is 2303440144009. The next prime is 2303440144039. The reversal of 2303440144021 is 1204410443032.

2303440144021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 153888305796 + 2149551838225 = 392286^2 + 1466135^2 .

It is a cyclic number.

It is not a de Polignac number, because 2303440144021 - 2¹¹ = 2303440141973 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 (2303440144001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6363094140 + ... + 6363094501.

It is an arithmetic number, because the mean of its divisors is an integer number (579041583211).

Almost surely, 2^{2303440144021} is an apocalyptic number.

It is an amenable number.

2303440144021 is a deficient number, since it is larger than the sum of its proper divisors (12726188823).

2303440144021 is a wasteful number, since it uses less digits than its factorization.

2303440144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12726188822.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2303440144021 its reverse (1204410443032), we get a palindrome (3507850587053).

The spelling of 2303440144021 in words is "two trillion, three hundred three billion, four hundred forty million, one hundred forty-four thousand, twenty-one".