123311223133213 has 6 divisors (see below), whose sum is σ = 128905683162494. Its totient is φ = 117949865605176.

The previous prime is 123311223133199. The next prime is 123311223133237. The reversal of 123311223133213 is 312331322113321.

It can be written as a sum of positive squares in only one way, i.e., 113132430595129 + 10178792538084 = 10636373^2 + 3190422^2 .

It is not a de Polignac number, because 123311223133213 - 2⁵ = 123311223133181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311223133253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116551250070 + ... + 116551251127.

Almost surely, 2^{123311223133213} is an apocalyptic number.

It is an amenable number.

123311223133213 is a deficient number, since it is larger than the sum of its proper divisors (5594460029281).

123311223133213 is an equidigital number, since it uses as much as digits as its factorization.

123311223133213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233102501243 (or 233102501220 counting only the distinct ones).

The product of its digits is 11664, while the sum is 31.

Adding to 123311223133213 its reverse (312331322113321), we get a palindrome (435642545246534).

The spelling of 123311223133213 in words is "one hundred twenty-three trillion, three hundred eleven billion, two hundred twenty-three million, one hundred thirty-three thousand, two hundred thirteen".