131144343211 has 4 divisors (see below), whose sum is σ = 149879249392. Its totient is φ = 112409437032.

The previous prime is 131144343203. The next prime is 131144343229. The reversal of 131144343211 is 112343441131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112343441131 = 379 ⋅296420689.

It is a cyclic number.

It is not a de Polignac number, because 131144343211 - 2³ = 131144343203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131144343211.

It is not an unprimeable number, because it can be changed into a prime (131144343271) 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, 9367453080 + ... + 9367453093.

It is an arithmetic number, because the mean of its divisors is an integer number (37469812348).

Almost surely, 2^131144343211 is an apocalyptic number.

131144343211 is a deficient number, since it is larger than the sum of its proper divisors (18734906181).

131144343211 is an equidigital number, since it uses as much as digits as its factorization.

131144343211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18734906180.

The product of its digits is 3456, while the sum is 28.

Adding to 131144343211 its reverse (112343441131), we get a palindrome (243487784342).

The spelling of 131144343211 in words is "one hundred thirty-one billion, one hundred forty-four million, three hundred forty-three thousand, two hundred eleven".