123120031323 has 4 divisors (see below), whose sum is σ = 164160041768. Its totient is φ = 82080020880.

The previous prime is 123120031301. The next prime is 123120031337. The reversal of 123120031323 is 323130021321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123120031323 - 2¹⁴ = 123120014939 is a prime.

It is a super-2 number, since 2×123120031323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123120031323.

It is not an unprimeable number, because it can be changed into a prime (123120031123) 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 in 3 ways as a sum of consecutive naturals, for example, 20520005218 + ... + 20520005223.

It is an arithmetic number, because the mean of its divisors is an integer number (41040010442).

Almost surely, 2^123120031323 is an apocalyptic number.

123120031323 is a deficient number, since it is larger than the sum of its proper divisors (41040010445).

123120031323 is an equidigital number, since it uses as much as digits as its factorization.

123120031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41040010444.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123120031323 its reverse (323130021321), we get a palindrome (446250052644).

The spelling of 123120031323 in words is "one hundred twenty-three billion, one hundred twenty million, thirty-one thousand, three hundred twenty-three".