321201343 has 2 divisors, whose sum is σ = 321201344. Its totient is φ = 321201342.

The previous prime is 321201317. The next prime is 321201347. The reversal of 321201343 is 343102123.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321201343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321201343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321201347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160600671 + 160600672.

It is an arithmetic number, because the mean of its divisors is an integer number (160600672).

Almost surely, 2^321201343 is an apocalyptic number.

321201343 is a deficient number, since it is larger than the sum of its proper divisors (1).

321201343 is an equidigital number, since it uses as much as digits as its factorization.

321201343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 321201343 is about 17922.0909215415. The cubic root of 321201343 is about 684.8452546180.

Adding to 321201343 its reverse (343102123), we get a palindrome (664303466).

The spelling of 321201343 in words is "three hundred twenty-one million, two hundred one thousand, three hundred forty-three".