321880943 has 2 divisors, whose sum is σ = 321880944. Its totient is φ = 321880942.

The previous prime is 321880927. The next prime is 321880963. The reversal of 321880943 is 349088123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321880943 - 2⁴ = 321880927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321880897 and 321880906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321880963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160940471 + 160940472.

It is an arithmetic number, because the mean of its divisors is an integer number (160940472).

Almost surely, 2^321880943 is an apocalyptic number.

321880943 is a deficient number, since it is larger than the sum of its proper divisors (1).

321880943 is an equidigital number, since it uses as much as digits as its factorization.

321880943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 321880943 is about 17941.0407446168. The cubic root of 321880943 is about 685.3279144653.

The spelling of 321880943 in words is "three hundred twenty-one million, eight hundred eighty thousand, nine hundred forty-three".