123312311323 has 4 divisors (see below), whose sum is σ = 123757482400. Its totient is φ = 122867140248.

The previous prime is 123312311303. The next prime is 123312311377. The reversal of 123312311323 is 323113213321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323113213321 = 41 ⋅7880810081.

It is a cyclic number.

It is not a de Polignac number, because 123312311323 - 2⁹ = 123312310811 is a prime.

It is a super-2 number, since 2×123312311323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123312311303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222585123 + ... + 222585676.

It is an arithmetic number, because the mean of its divisors is an integer number (30939370600).

Almost surely, 2^123312311323 is an apocalyptic number.

123312311323 is a deficient number, since it is larger than the sum of its proper divisors (445171077).

123312311323 is an equidigital number, since it uses as much as digits as its factorization.

123312311323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445171076.

The product of its digits is 1944, while the sum is 25.

Adding to 123312311323 its reverse (323113213321), we get a palindrome (446425524644).

The spelling of 123312311323 in words is "one hundred twenty-three billion, three hundred twelve million, three hundred eleven thousand, three hundred twenty-three".