123352123313513 has 4 divisors (see below), whose sum is σ = 123352145578068. Its totient is φ = 123352101048960.

The previous prime is 123352123313437. The next prime is 123352123313533. The reversal of 123352123313513 is 315313321253321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 80843979203584 + 42508144109929 = 8991328^2 + 6519827^2 .

It is a cyclic number.

It is not a de Polignac number, because 123352123313513 - 2³⁶ = 123283403836777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123352123313533) 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, 4428245 + ... + 16319117.

It is an arithmetic number, because the mean of its divisors is an integer number (30838036394517).

Almost surely, 2^{123352123313513} is an apocalyptic number.

It is an amenable number.

123352123313513 is a deficient number, since it is larger than the sum of its proper divisors (22264555).

123352123313513 is a wasteful number, since it uses less digits than its factorization.

123352123313513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22264554.

The product of its digits is 145800, while the sum is 38.

Adding to 123352123313513 its reverse (315313321253321), we get a palindrome (438665444566834).

The spelling of 123352123313513 in words is "one hundred twenty-three trillion, three hundred fifty-two billion, one hundred twenty-three million, three hundred thirteen thousand, five hundred thirteen".