321244205353243 has 2 divisors, whose sum is σ = 321244205353244. Its totient is φ = 321244205353242.

The previous prime is 321244205353217. The next prime is 321244205353271. The reversal of 321244205353243 is 342353502442123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321244205353243 - 2²¹ = 321244203256091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321244205353243.

It is not a weakly prime, because it can be changed into another prime (321244205353273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160622102676621 + 160622102676622.

It is an arithmetic number, because the mean of its divisors is an integer number (160622102676622).

Almost surely, 2^{321244205353243} is an apocalyptic number.

321244205353243 is a deficient number, since it is larger than the sum of its proper divisors (1).

321244205353243 is an equidigital number, since it uses as much as digits as its factorization.

321244205353243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 43.

Adding to 321244205353243 its reverse (342353502442123), we get a palindrome (663597707795366).

The spelling of 321244205353243 in words is "three hundred twenty-one trillion, two hundred forty-four billion, two hundred five million, three hundred fifty-three thousand, two hundred forty-three".