166431324341 has 2 divisors, whose sum is σ = 166431324342. Its totient is φ = 166431324340.

The previous prime is 166431324281. The next prime is 166431324343. The reversal of 166431324341 is 143423134661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166247830225 + 183494116 = 407735^2 + 13546^2 .

It is a cyclic number.

It is not a de Polignac number, because 166431324341 - 2¹⁴ = 166431307957 is a prime.

It is a Sophie Germain prime.

Together with 166431324343, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166431324295 and 166431324304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166431324343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83215662170 + 83215662171.

It is an arithmetic number, because the mean of its divisors is an integer number (83215662171).

Almost surely, 2^166431324341 is an apocalyptic number.

It is an amenable number.

166431324341 is a deficient number, since it is larger than the sum of its proper divisors (1).

166431324341 is an equidigital number, since it uses as much as digits as its factorization.

166431324341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 38.

The spelling of 166431324341 in words is "one hundred sixty-six billion, four hundred thirty-one million, three hundred twenty-four thousand, three hundred forty-one".