123113213323213 has 4 divisors (see below), whose sum is σ = 123117944651388. Its totient is φ = 123108481995040.

The previous prime is 123113213323183. The next prime is 123113213323237. The reversal of 123113213323213 is 312323312311321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 66611502358569 + 56501710964644 = 8161587^2 + 7516762^2 .

It is a cyclic number.

It is not a de Polignac number, because 123113213323213 - 2¹⁷ = 123113213192141 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 (123113213323913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2365625056 + ... + 2365677097.

It is an arithmetic number, because the mean of its divisors is an integer number (30779486162847).

Almost surely, 2^{123113213323213} is an apocalyptic number.

It is an amenable number.

123113213323213 is a deficient number, since it is larger than the sum of its proper divisors (4731328175).

123113213323213 is an equidigital number, since it uses as much as digits as its factorization.

123113213323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731328174.

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

Adding to 123113213323213 its reverse (312323312311321), we get a palindrome (435436525634534).

The spelling of 123113213323213 in words is "one hundred twenty-three trillion, one hundred thirteen billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred thirteen".