123312120023 has 16 divisors (see below), whose sum is σ = 130961376000. Its totient is φ = 115707312000.

The previous prime is 123312119981. The next prime is 123312120031. The reversal of 123312120023 is 320021213321.

It is a cyclic number.

It is not a de Polignac number, because 123312120023 - 2¹⁶ = 123312054487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123312119977 and 123312120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123312123023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8908718 + ... + 8922548.

It is an arithmetic number, because the mean of its divisors is an integer number (8185086000).

Almost surely, 2^123312120023 is an apocalyptic number.

123312120023 is a deficient number, since it is larger than the sum of its proper divisors (7649255977).

123312120023 is a wasteful number, since it uses less digits than its factorization.

123312120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15398.

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

Adding to 123312120023 its reverse (320021213321), we get a palindrome (443333333344).

The spelling of 123312120023 in words is "one hundred twenty-three billion, three hundred twelve million, one hundred twenty thousand, twenty-three".