20123203312063 has 2 divisors, whose sum is σ = 20123203312064. Its totient is φ = 20123203312062.

The previous prime is 20123203312061. The next prime is 20123203312081. The reversal of 20123203312063 is 36021330232102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20123203312063 - 2¹ = 20123203312061 is a prime.

It is a super-2 number, since 2×20123203312063² (a number of 27 digits) contains 22 as substring.

Together with 20123203312061, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123203312061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061601656031 + 10061601656032.

It is an arithmetic number, because the mean of its divisors is an integer number (10061601656032).

Almost surely, 2^{20123203312063} is an apocalyptic number.

20123203312063 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123203312063 is an equidigital number, since it uses as much as digits as its factorization.

20123203312063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 20123203312063 its reverse (36021330232102), we get a palindrome (56144533544165).

The spelling of 20123203312063 in words is "twenty trillion, one hundred twenty-three billion, two hundred three million, three hundred twelve thousand, sixty-three".