13531113131 has 8 divisors (see below), whose sum is σ = 14403315600. Its totient is φ = 12674914560.

The previous prime is 13531113077. The next prime is 13531113133. The reversal of 13531113131 is 13131113531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13531113131 is a prime.

It is a super-2 number, since 2×13531113131² (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 = 13531113097 and 13531113106.

It is not an unprimeable number, because it can be changed into a prime (13531113133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3999230 + ... + 4002611.

It is an arithmetic number, because the mean of its divisors is an integer number (1800414450).

Almost surely, 2^13531113131 is an apocalyptic number.

13531113131 is a deficient number, since it is larger than the sum of its proper divisors (872202469).

13531113131 is an equidigital number, since it uses as much as digits as its factorization.

13531113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001949.

The product of its digits is 405, while the sum is 23.

Adding to 13531113131 its reverse (13131113531), we get a palindrome (26662226662).

The spelling of 13531113131 in words is "thirteen billion, five hundred thirty-one million, one hundred thirteen thousand, one hundred thirty-one".