324256321 has 2 divisors, whose sum is σ = 324256322. Its totient is φ = 324256320.

The previous prime is 324256301. The next prime is 324256363. The reversal of 324256321 is 123652423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283551921 + 40704400 = 16839^2 + 6380^2 .

It is a cyclic number.

It is not a de Polignac number, because 324256321 - 2⁷ = 324256193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 324256321.

It is not a weakly prime, because it can be changed into another prime (324256301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162128160 + 162128161.

It is an arithmetic number, because the mean of its divisors is an integer number (162128161).

Almost surely, 2^324256321 is an apocalyptic number.

It is an amenable number.

324256321 is a deficient number, since it is larger than the sum of its proper divisors (1).

324256321 is an equidigital number, since it uses as much as digits as its factorization.

324256321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 28.

The square root of 324256321 is about 18007.1186201458. The cubic root of 324256321 is about 687.0096177287.

The spelling of 324256321 in words is "three hundred twenty-four million, two hundred fifty-six thousand, three hundred twenty-one".