123313201123 has 4 divisors (see below), whose sum is σ = 140929372720. Its totient is φ = 105697029528.

The previous prime is 123313201069. The next prime is 123313201129. The reversal of 123313201123 is 321102313321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123313201123 is a prime.

It is a super-2 number, since 2×123313201123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123313201094 and 123313201103.

It is not an unprimeable number, because it can be changed into a prime (123313201129) 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, 8808085788 + ... + 8808085801.

It is an arithmetic number, because the mean of its divisors is an integer number (35232343180).

Almost surely, 2^123313201123 is an apocalyptic number.

123313201123 is a deficient number, since it is larger than the sum of its proper divisors (17616171597).

123313201123 is an equidigital number, since it uses as much as digits as its factorization.

123313201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17616171596.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123313201123 its reverse (321102313321), we get a palindrome (444415514444).

The spelling of 123313201123 in words is "one hundred twenty-three billion, three hundred thirteen million, two hundred one thousand, one hundred twenty-three".