13013113231 has 4 divisors (see below), whose sum is σ = 13364819032. Its totient is φ = 12661407432.

The previous prime is 13013113187. The next prime is 13013113261. The reversal of 13013113231 is 13231131031.

13013113231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13231131031 = 577 ⋅22930903.

It is a cyclic number.

It is not a de Polignac number, because 13013113231 - 2⁹ = 13013112719 is a prime.

It is a super-2 number, since 2×13013113231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13013113199 and 13013113208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013113261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175852845 + ... + 175852918.

It is an arithmetic number, because the mean of its divisors is an integer number (3341204758).

Almost surely, 2^13013113231 is an apocalyptic number.

13013113231 is a deficient number, since it is larger than the sum of its proper divisors (351705801).

13013113231 is an equidigital number, since it uses as much as digits as its factorization.

13013113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351705800.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13013113231 its reverse (13231131031), we get a palindrome (26244244262).

The spelling of 13013113231 in words is "thirteen billion, thirteen million, one hundred thirteen thousand, two hundred thirty-one".