13123113234 has 128 divisors (see below), whose sum is σ = 34261678080. Its totient is φ = 3251136000.

The previous prime is 13123113217. The next prime is 13123113257. The reversal of 13123113234 is 43231132131.

It is a super-2 number, since 2×13123113234² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1106134 + ... + 1117934.

It is an arithmetic number, because the mean of its divisors is an integer number (267669360).

Almost surely, 2^13123113234 is an apocalyptic number.

13123113234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13123113234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17130839040).

13123113234 is an abundant number, since it is smaller than the sum of its proper divisors (21138564846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123113234 is a wasteful number, since it uses less digits than its factorization.

13123113234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11936.

The product of its digits is 1296, while the sum is 24.

Adding to 13123113234 its reverse (43231132131), we get a palindrome (56354245365).

The spelling of 13123113234 in words is "thirteen billion, one hundred twenty-three million, one hundred thirteen thousand, two hundred thirty-four".