131243441224211 has 4 divisors (see below), whose sum is σ = 131312918961000. Its totient is φ = 131173963487424.

The previous prime is 131243441224183. The next prime is 131243441224249. The reversal of 131243441224211 is 112422144342131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131243441224211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131243441220211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34738865561 + ... + 34738869338.

It is an arithmetic number, because the mean of its divisors is an integer number (32828229740250).

Almost surely, 2^{131243441224211} is an apocalyptic number.

131243441224211 is a deficient number, since it is larger than the sum of its proper divisors (69477736789).

131243441224211 is an equidigital number, since it uses as much as digits as its factorization.

131243441224211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69477736788.

The product of its digits is 36864, while the sum is 35.

Adding to 131243441224211 its reverse (112422144342131), we get a palindrome (243665585566342).

The spelling of 131243441224211 in words is "one hundred thirty-one trillion, two hundred forty-three billion, four hundred forty-one million, two hundred twenty-four thousand, two hundred eleven".