131131300221 has 40 divisors (see below), whose sum is σ = 197587850240. Its totient is φ = 86663146752.

The previous prime is 131131300219. The next prime is 131131300229. The reversal of 131131300221 is 122003131131.

131131300221 is a `hidden beast` number, since 1 + 311 + 3 + 130 + 0 + 221 = 666.

It is not a de Polignac number, because 131131300221 - 2¹ = 131131300219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131131300194 and 131131300203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131131300229) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15004365 + ... + 15013101.

It is an arithmetic number, because the mean of its divisors is an integer number (4939696256).

Almost surely, 2^131131300221 is an apocalyptic number.

It is an amenable number.

131131300221 is a deficient number, since it is larger than the sum of its proper divisors (66456550019).

131131300221 is a wasteful number, since it uses less digits than its factorization.

131131300221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10335 (or 10326 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131131300221 its reverse (122003131131), we get a palindrome (253134431352).

The spelling of 131131300221 in words is "one hundred thirty-one billion, one hundred thirty-one million, three hundred thousand, two hundred twenty-one".