131320113131 has 4 divisors (see below), whose sum is σ = 131623393272. Its totient is φ = 131016832992.

The previous prime is 131320113091. The next prime is 131320113209. The reversal of 131320113131 is 131311023131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131311023131 = 1933 ⋅67931207.

It is a cyclic number.

It is not a de Polignac number, because 131320113131 - 2²² = 131315918827 is a prime.

It is a super-2 number, since 2×131320113131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131320113931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151639421 + ... + 151640286.

It is an arithmetic number, because the mean of its divisors is an integer number (32905848318).

Almost surely, 2^131320113131 is an apocalyptic number.

131320113131 is a deficient number, since it is larger than the sum of its proper divisors (303280141).

131320113131 is an equidigital number, since it uses as much as digits as its factorization.

131320113131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303280140.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 131320113131 its reverse (131311023131), we get a palindrome (262631136262).

The spelling of 131320113131 in words is "one hundred thirty-one billion, three hundred twenty million, one hundred thirteen thousand, one hundred thirty-one".