13231123113 has 32 divisors (see below), whose sum is σ = 19623324672. Its totient is φ = 7874784000.

The previous prime is 13231123111. The next prime is 13231123121. The reversal of 13231123113 is 31132113231.

It is a happy number.

It is not a de Polignac number, because 13231123113 - 2¹ = 13231123111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13231123113.

It is not an unprimeable number, because it can be changed into a prime (13231123111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3573163 + ... + 3576863.

It is an arithmetic number, because the mean of its divisors is an integer number (613228896).

Almost surely, 2^13231123113 is an apocalyptic number.

13231123113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13231123113 is a deficient number, since it is larger than the sum of its proper divisors (6392201559).

13231123113 is a wasteful number, since it uses less digits than its factorization.

13231123113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705.

The product of its digits is 324, while the sum is 21.

Adding to 13231123113 its reverse (31132113231), we get a palindrome (44363236344).

The spelling of 13231123113 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-three thousand, one hundred thirteen".