13123132123 has 4 divisors (see below), whose sum is σ = 13226464000. Its totient is φ = 13019800248.

The previous prime is 13123132091. The next prime is 13123132157. The reversal of 13123132123 is 32123132131.

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

It is a cyclic number.

It is not a de Polignac number, because 13123132123 - 2⁵ = 13123132091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123132094 and 13123132103.

It is not an unprimeable number, because it can be changed into a prime (13123132223) 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, 51665748 + ... + 51666001.

It is an arithmetic number, because the mean of its divisors is an integer number (3306616000).

Almost surely, 2^13123132123 is an apocalyptic number.

13123132123 is a deficient number, since it is larger than the sum of its proper divisors (103331877).

13123132123 is a wasteful number, since it uses less digits than its factorization.

13123132123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103331876.

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

Adding to 13123132123 its reverse (32123132131), we get a palindrome (45246264254).

The spelling of 13123132123 in words is "thirteen billion, one hundred twenty-three million, one hundred thirty-two thousand, one hundred twenty-three".