323256321 has 6 divisors (see below), whose sum is σ = 466925810. Its totient is φ = 215504208.

The previous prime is 323256317. The next prime is 323256361. The reversal of 323256321 is 123652323.

323256321 is a `hidden beast` number, since 3 + 2 + 3 + 25 + 632 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 320016321 + 3240000 = 17889^2 + 1800^2 .

It is not a de Polignac number, because 323256321 - 2² = 323256317 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323256361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17958676 + ... + 17958693.

It is a Proth number, since it is equal to 9865 ⋅ 2¹⁵ + 1 and 9865 < 2¹⁵.

Almost surely, 2^323256321 is an apocalyptic number.

It is an amenable number.

323256321 is a deficient number, since it is larger than the sum of its proper divisors (143669489).

323256321 is a wasteful number, since it uses less digits than its factorization.

323256321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35917375 (or 35917372 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 323256321 is about 17979.3303824141. The cubic root of 323256321 is about 686.3026491702.

The spelling of 323256321 in words is "three hundred twenty-three million, two hundred fifty-six thousand, three hundred twenty-one".