131342440230321 has 4 divisors (see below), whose sum is σ = 175123253640432. Its totient is φ = 87561626820212.

The previous prime is 131342440230301. The next prime is 131342440230343. The reversal of 131342440230321 is 123032044243131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131342440230321 - 2⁵ = 131342440230289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131342440230301) 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, 21890406705051 + ... + 21890406705056.

It is an arithmetic number, because the mean of its divisors is an integer number (43780813410108).

Almost surely, 2^{131342440230321} is an apocalyptic number.

It is an amenable number.

131342440230321 is a deficient number, since it is larger than the sum of its proper divisors (43780813410111).

131342440230321 is an equidigital number, since it uses as much as digits as its factorization.

131342440230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43780813410110.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 131342440230321 its reverse (123032044243131), we get a palindrome (254374484473452).

The spelling of 131342440230321 in words is "one hundred thirty-one trillion, three hundred forty-two billion, four hundred forty million, two hundred thirty thousand, three hundred twenty-one".