20211423303 has 4 divisors (see below), whose sum is σ = 26948564408. Its totient is φ = 13474282200.

The previous prime is 20211423251. The next prime is 20211423311. The reversal of 20211423303 is 30332411202.

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

It is not a de Polignac number, because 20211423303 - 2¹⁶ = 20211357767 is a prime.

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 20211423303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211423503) 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, 3368570548 + ... + 3368570553.

It is an arithmetic number, because the mean of its divisors is an integer number (6737141102).

Almost surely, 2^20211423303 is an apocalyptic number.

20211423303 is a deficient number, since it is larger than the sum of its proper divisors (6737141105).

20211423303 is an equidigital number, since it uses as much as digits as its factorization.

20211423303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6737141104.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20211423303 its reverse (30332411202), we get a palindrome (50543834505).

The spelling of 20211423303 in words is "twenty billion, two hundred eleven million, four hundred twenty-three thousand, three hundred three".