123312320023 has 16 divisors (see below), whose sum is σ = 126584290944. Its totient is φ = 120082116960.

The previous prime is 123312319993. The next prime is 123312320041. The reversal of 123312320023 is 320023213321.

It is a cyclic number.

It is not a de Polignac number, because 123312320023 - 2⁹ = 123312319511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123312319976 and 123312320003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123312320093) 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 in 15 ways as a sum of consecutive naturals, for example, 12442036 + ... + 12451942.

It is an arithmetic number, because the mean of its divisors is an integer number (7911518184).

Almost surely, 2^123312320023 is an apocalyptic number.

123312320023 is a deficient number, since it is larger than the sum of its proper divisors (3271970921).

123312320023 is a wasteful number, since it uses less digits than its factorization.

123312320023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11982.

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

Adding to 123312320023 its reverse (320023213321), we get a palindrome (443335533344).

The spelling of 123312320023 in words is "one hundred twenty-three billion, three hundred twelve million, three hundred twenty thousand, twenty-three".