20020243323 has 16 divisors (see below), whose sum is σ = 28140145920. Its totient is φ = 12625662816.

The previous prime is 20020243291. The next prime is 20020243337. The reversal of 20020243323 is 32334202002.

It is not a de Polignac number, because 20020243323 - 2⁵ = 20020243291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020243323.

It is not an unprimeable number, because it can be changed into a prime (20020243823) 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 15 ways as a sum of consecutive naturals, for example, 220815 + ... + 297992.

It is an arithmetic number, because the mean of its divisors is an integer number (1758759120).

Almost surely, 2^20020243323 is an apocalyptic number.

20020243323 is a deficient number, since it is larger than the sum of its proper divisors (8119902597).

20020243323 is a wasteful number, since it uses less digits than its factorization.

20020243323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519506.

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 20020243323 its reverse (32334202002), we get a palindrome (52354445325).

The spelling of 20020243323 in words is "twenty billion, twenty million, two hundred forty-three thousand, three hundred twenty-three".