20323213123 has 2 divisors, whose sum is σ = 20323213124. Its totient is φ = 20323213122.

The previous prime is 20323213111. The next prime is 20323213187. The reversal of 20323213123 is 32131232302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20323213123 - 2¹⁷ = 20323082051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323213094 and 20323213103.

It is not a weakly prime, because it can be changed into another prime (20323213723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161606561 + 10161606562.

It is an arithmetic number, because the mean of its divisors is an integer number (10161606562).

Almost surely, 2^20323213123 is an apocalyptic number.

20323213123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323213123 is an equidigital number, since it uses as much as digits as its factorization.

20323213123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20323213123 its reverse (32131232302), we get a palindrome (52454445425).

The spelling of 20323213123 in words is "twenty billion, three hundred twenty-three million, two hundred thirteen thousand, one hundred twenty-three".