131183118313 has 4 divisors (see below), whose sum is σ = 141274127428. Its totient is φ = 121092109200.

The previous prime is 131183118307. The next prime is 131183118349. The reversal of 131183118313 is 313811381131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47634372009 + 83548746304 = 218253^2 + 289048^2 .

It is a cyclic number.

It is not a de Polignac number, because 131183118313 - 2⁵ = 131183118281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131183116313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5045504538 + ... + 5045504563.

It is an arithmetic number, because the mean of its divisors is an integer number (35318531857).

Almost surely, 2^131183118313 is an apocalyptic number.

131183118313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131183118313 is a deficient number, since it is larger than the sum of its proper divisors (10091009115).

131183118313 is a wasteful number, since it uses less digits than its factorization.

131183118313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10091009114.

The product of its digits is 5184, while the sum is 34.

Adding to 131183118313 its reverse (313811381131), we get a palindrome (444994499444).

The spelling of 131183118313 in words is "one hundred thirty-one billion, one hundred eighty-three million, one hundred eighteen thousand, three hundred thirteen".