20321244423 has 12 divisors (see below), whose sum is σ = 31079550528. Its totient is φ = 12750584640.

The previous prime is 20321244409. The next prime is 20321244431. The reversal of 20321244423 is 32444212302.

20321244423 is a `hidden beast` number, since 2 + 0 + 3 + 212 + 4 + 442 + 3 = 666.

It is not a de Polignac number, because 20321244423 - 2³³ = 11731309831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321264423) 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 11 ways as a sum of consecutive naturals, for example, 66409143 + ... + 66409448.

It is an arithmetic number, because the mean of its divisors is an integer number (2589962544).

Almost surely, 2^20321244423 is an apocalyptic number.

20321244423 is a deficient number, since it is larger than the sum of its proper divisors (10758306105).

20321244423 is a wasteful number, since it uses less digits than its factorization.

20321244423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132818614 (or 132818611 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20321244423 its reverse (32444212302), we get a palindrome (52765456725).

The spelling of 20321244423 in words is "twenty billion, three hundred twenty-one million, two hundred forty-four thousand, four hundred twenty-three".