123313123 has 4 divisors (see below), whose sum is σ = 123350080. Its totient is φ = 123276168.

The previous prime is 123313109. The next prime is 123313129. The reversal of 123313123 is 321313321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321313321 = 7 ⋅45901903.

It is a cyclic number.

It is not a de Polignac number, because 123313123 - 2¹³ = 123304931 is a prime.

It is a super-2 number, since 2×123313123² = 30412252608026258, which 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 123313123.

It is not an unprimeable number, because it can be changed into a prime (123313129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12915 + ... + 20332.

It is an arithmetic number, because the mean of its divisors is an integer number (30837520).

Almost surely, 2^123313123 is an apocalyptic number.

123313123 is a deficient number, since it is larger than the sum of its proper divisors (36957).

123313123 is an equidigital number, since it uses as much as digits as its factorization.

123313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36956.

The product of its digits is 324, while the sum is 19.

The square root of 123313123 is about 11104.6442086183. The cubic root of 123313123 is about 497.7406365986.

Adding to 123313123 its reverse (321313321), we get a palindrome (444626444).

The spelling of 123313123 in words is "one hundred twenty-three million, three hundred thirteen thousand, one hundred twenty-three".