131420042423443 has 4 divisors (see below), whose sum is σ = 131839914763768. Its totient is φ = 131000170083120.

The previous prime is 131420042423429. The next prime is 131420042423503. The reversal of 131420042423443 is 344324240024131.

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-131420042423443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131420042426443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209936169693 + ... + 209936170318.

It is an arithmetic number, because the mean of its divisors is an integer number (32959978690942).

Almost surely, 2^{131420042423443} is an apocalyptic number.

131420042423443 is a deficient number, since it is larger than the sum of its proper divisors (419872340325).

131420042423443 is an equidigital number, since it uses as much as digits as its factorization.

131420042423443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419872340324.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 131420042423443 its reverse (344324240024131), we get a palindrome (475744282447574).

The spelling of 131420042423443 in words is "one hundred thirty-one trillion, four hundred twenty billion, forty-two million, four hundred twenty-three thousand, four hundred forty-three".