321673343 has 2 divisors, whose sum is σ = 321673344. Its totient is φ = 321673342.

The previous prime is 321673333. The next prime is 321673349. The reversal of 321673343 is 343376123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321673343 - 2¹⁶ = 321607807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321673349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160836671 + 160836672.

It is an arithmetic number, because the mean of its divisors is an integer number (160836672).

Almost surely, 2^321673343 is an apocalyptic number.

321673343 is a deficient number, since it is larger than the sum of its proper divisors (1).

321673343 is an equidigital number, since it uses as much as digits as its factorization.

321673343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 32.

The square root of 321673343 is about 17935.2541939054. The cubic root of 321673343 is about 685.1805466511.

The spelling of 321673343 in words is "three hundred twenty-one million, six hundred seventy-three thousand, three hundred forty-three".