321268 has 6 divisors (see below), whose sum is σ = 562226. Its totient is φ = 160632.

The previous prime is 321247. The next prime is 321289. The reversal of 321268 is 862123.

It is an interprime number because it is at equal distance from previous prime (321247) and next prime (321289).

It can be written as a sum of positive squares in only one way, i.e., 204304 + 116964 = 452^2 + 342^2 .

It is a d-powerful number, because it can be written as 3¹⁰ + 2² + 2¹⁸ + 1 + 6 + 8² .

It is a congruent number.

It is an unprimeable number.

321268 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 40155 + ... + 40162.

2³²¹²⁶⁸ is an apocalyptic number.

It is an amenable number.

321268 is a deficient number, since it is larger than the sum of its proper divisors (240958).

321268 is a wasteful number, since it uses less digits than its factorization.

321268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80321 (or 80319 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 321268 is about 566.8050811346. The cubic root of 321268 is about 68.4892625292.

The spelling of 321268 in words is "three hundred twenty-one thousand, two hundred sixty-eight".