321208 has 8 divisors (see below), whose sum is σ = 602280. Its totient is φ = 160600.

The previous prime is 321203. The next prime is 321221. The reversal of 321208 is 802123.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 321191 and 321200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20068 + ... + 20083.

It is an arithmetic number, because the mean of its divisors is an integer number (75285).

2³²¹²⁰⁸ is an apocalyptic number.

It is an amenable number.

321208 is a deficient number, since it is larger than the sum of its proper divisors (281072).

321208 is a wasteful number, since it uses less digits than its factorization.

321208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40157 (or 40153 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 321208 is about 566.7521504150. The cubic root of 321208 is about 68.4849985797.

It can be divided in two parts, 321 and 208, that added together give a square (529 = 23²).

The spelling of 321208 in words is "three hundred twenty-one thousand, two hundred eight".