20323112123 has 2 divisors, whose sum is σ = 20323112124. Its totient is φ = 20323112122.

The previous prime is 20323112119. The next prime is 20323112149. The reversal of 20323112123 is 32121132302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20323112123 - 2² = 20323112119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323112095 and 20323112104.

It is not a weakly prime, because it can be changed into another prime (20323112113) 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 as a sum of consecutive naturals, namely, 10161556061 + 10161556062.

It is an arithmetic number, because the mean of its divisors is an integer number (10161556062).

Almost surely, 2^20323112123 is an apocalyptic number.

20323112123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323112123 is an equidigital number, since it uses as much as digits as its factorization.

20323112123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20323112123 its reverse (32121132302), we get a palindrome (52444244425).

The spelling of 20323112123 in words is "twenty billion, three hundred twenty-three million, one hundred twelve thousand, one hundred twenty-three".