20320041223 has 2 divisors, whose sum is σ = 20320041224. Its totient is φ = 20320041222.

The previous prime is 20320041221. The next prime is 20320041307. The reversal of 20320041223 is 32214002302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20320041223 - 2¹ = 20320041221 is a prime.

Together with 20320041221, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20320041223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20320041221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160020611 + 10160020612.

It is an arithmetic number, because the mean of its divisors is an integer number (10160020612).

Almost surely, 2^20320041223 is an apocalyptic number.

20320041223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320041223 is an equidigital number, since it uses as much as digits as its factorization.

20320041223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20320041223 its reverse (32214002302), we get a palindrome (52534043525).

The spelling of 20320041223 in words is "twenty billion, three hundred twenty million, forty-one thousand, two hundred twenty-three".