13211113131 has 24 divisors (see below), whose sum is σ = 19376024720. Its totient is φ = 8672152896.

The previous prime is 13211113121. The next prime is 13211113133. The reversal of 13211113131 is 13131111231.

It is not a de Polignac number, because 13211113131 - 2⁵ = 13211113099 is a prime.

It is a super-2 number, since 2×13211113131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13211113133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2248065 + ... + 2253933.

Almost surely, 2^13211113131 is an apocalyptic number.

13211113131 is a deficient number, since it is larger than the sum of its proper divisors (6164911589).

13211113131 is a wasteful number, since it uses less digits than its factorization.

13211113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9675 (or 9672 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 13211113131 its reverse (13131111231), we get a palindrome (26342224362).

The spelling of 13211113131 in words is "thirteen billion, two hundred eleven million, one hundred thirteen thousand, one hundred thirty-one".