321424193 has 2 divisors, whose sum is σ = 321424194. Its totient is φ = 321424192.

The previous prime is 321424109. The next prime is 321424247. The reversal of 321424193 is 391424123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239847169 + 81577024 = 15487^2 + 9032^2 .

It is a cyclic number.

It is not a de Polignac number, because 321424193 - 2¹⁰ = 321423169 is a prime.

It is not a weakly prime, because it can be changed into another prime (326424193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160712096 + 160712097.

It is an arithmetic number, because the mean of its divisors is an integer number (160712097).

Almost surely, 2^321424193 is an apocalyptic number.

It is an amenable number.

321424193 is a deficient number, since it is larger than the sum of its proper divisors (1).

321424193 is an equidigital number, since it uses as much as digits as its factorization.

321424193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 321424193 is about 17928.3070310612. The cubic root of 321424193 is about 685.0036002439.

The spelling of 321424193 in words is "three hundred twenty-one million, four hundred twenty-four thousand, one hundred ninety-three".