131205115044443 has 4 divisors (see below), whose sum is σ = 143132852775768. Its totient is φ = 119277377313120.

The previous prime is 131205115044439. The next prime is 131205115044449. The reversal of 131205115044443 is 344440511502131.

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

It is a cyclic number.

It is not a de Polignac number, because 131205115044443 - 2² = 131205115044439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131205115044397 and 131205115044406.

It is not an unprimeable number, because it can be changed into a prime (131205115044449) 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, 5963868865646 + ... + 5963868865667.

It is an arithmetic number, because the mean of its divisors is an integer number (35783213193942).

Almost surely, 2^{131205115044443} is an apocalyptic number.

131205115044443 is a deficient number, since it is larger than the sum of its proper divisors (11927737731325).

131205115044443 is a wasteful number, since it uses less digits than its factorization.

131205115044443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11927737731324.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 131205115044443 its reverse (344440511502131), we get a palindrome (475645626546574).

The spelling of 131205115044443 in words is "one hundred thirty-one trillion, two hundred five billion, one hundred fifteen million, forty-four thousand, four hundred forty-three".