321108 has 12 divisors (see below), whose sum is σ = 749280. Its totient is φ = 107032.

The previous prime is 321091. The next prime is 321109. The reversal of 321108 is 801123.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×321108² = 206220695328, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 321108.

It is not an unprimeable number, because it can be changed into a prime (321109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13368 + ... + 13391.

It is an arithmetic number, because the mean of its divisors is an integer number (62440).

2³²¹¹⁰⁸ is an apocalyptic number.

It is an amenable number.

321108 is an abundant number, since it is smaller than the sum of its proper divisors (428172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321108 is a wasteful number, since it uses less digits than its factorization.

321108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26766 (or 26764 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 321108 is about 566.6639215620. The cubic root of 321108 is about 68.4778908171.

Adding to 321108 its sum of digits (15), we get a palindrome (321123).

The spelling of 321108 in words is "three hundred twenty-one thousand, one hundred eight".