131342441338421 has 2 divisors, whose sum is σ = 131342441338422. Its totient is φ = 131342441338420.

The previous prime is 131342441338399. The next prime is 131342441338499. The reversal of 131342441338421 is 124833144243131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83192914630225 + 48149526708196 = 9121015^2 + 6938986^2 .

It is an emirp because it is prime and its reverse (124833144243131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131342441338421 - 2¹⁰ = 131342441337397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131342441038421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65671220669210 + 65671220669211.

It is an arithmetic number, because the mean of its divisors is an integer number (65671220669211).

Almost surely, 2^{131342441338421} is an apocalyptic number.

It is an amenable number.

131342441338421 is a deficient number, since it is larger than the sum of its proper divisors (1).

131342441338421 is an equidigital number, since it uses as much as digits as its factorization.

131342441338421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 44.

The spelling of 131342441338421 in words is "one hundred thirty-one trillion, three hundred forty-two billion, four hundred forty-one million, three hundred thirty-eight thousand, four hundred twenty-one".