13113013231 has 16 divisors (see below), whose sum is σ = 13806561888. Its totient is φ = 12437798400.

The previous prime is 13113013219. The next prime is 13113013241. The reversal of 13113013231 is 13231031131.

It is a cyclic number.

It is not a de Polignac number, because 13113013231 - 2⁷ = 13113013103 is a prime.

It is a super-2 number, since 2×13113013231² (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 = 13113013199 and 13113013208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113013241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2656836 + ... + 2661766.

It is an arithmetic number, because the mean of its divisors is an integer number (862910118).

Almost surely, 2^13113013231 is an apocalyptic number.

13113013231 is a deficient number, since it is larger than the sum of its proper divisors (693548657).

13113013231 is a wasteful number, since it uses less digits than its factorization.

13113013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762.

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

Adding to 13113013231 its reverse (13231031131), we get a palindrome (26344044362).

The spelling of 13113013231 in words is "thirteen billion, one hundred thirteen million, thirteen thousand, two hundred thirty-one".