20243332423 has 4 divisors (see below), whose sum is σ = 20245523800. Its totient is φ = 20241141048.

The previous prime is 20243332399. The next prime is 20243332427. The reversal of 20243332423 is 32423334202.

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

It is a cyclic number.

It is not a de Polignac number, because 20243332423 - 2²¹ = 20241235271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20243332391 and 20243332400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243332427) 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, 1081773 + ... + 1100326.

It is an arithmetic number, because the mean of its divisors is an integer number (5061380950).

Almost surely, 2^20243332423 is an apocalyptic number.

20243332423 is a deficient number, since it is larger than the sum of its proper divisors (2191377).

20243332423 is an equidigital number, since it uses as much as digits as its factorization.

20243332423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191376.

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 20243332423 its reverse (32423334202), we get a palindrome (52666666625).

The spelling of 20243332423 in words is "twenty billion, two hundred forty-three million, three hundred thirty-two thousand, four hundred twenty-three".