13131445511231 has 16 divisors (see below), whose sum is σ = 13260907820160. Its totient is φ = 13002634068000.

The previous prime is 13131445511201. The next prime is 13131445511287. The reversal of 13131445511231 is 13211554413131.

It is a cyclic number.

It is not a de Polignac number, because 13131445511231 - 2¹⁰ = 13131445510207 is a prime.

It is a super-2 number, since 2×13131445511231² (a number of 27 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 = 13131445511191 and 13131445511200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131445511201) 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, 179814281 + ... + 179887293.

It is an arithmetic number, because the mean of its divisors is an integer number (828806738760).

Almost surely, 2^{13131445511231} is an apocalyptic number.

13131445511231 is a deficient number, since it is larger than the sum of its proper divisors (129462308929).

13131445511231 is a wasteful number, since it uses less digits than its factorization.

13131445511231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77446.

The product of its digits is 21600, while the sum is 35.

Adding to 13131445511231 its reverse (13211554413131), we get a palindrome (26342999924362).

The spelling of 13131445511231 in words is "thirteen trillion, one hundred thirty-one billion, four hundred forty-five million, five hundred eleven thousand, two hundred thirty-one".