321104 has 40 divisors (see below), whose sum is σ = 738048. Its totient is φ = 132480.

The previous prime is 321091. The next prime is 321109. The reversal of 321104 is 401123.

It is a happy number.

It is a congruent number.

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

321104 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5234 + ... + 5294.

2³²¹¹⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369024).

321104 is an abundant number, since it is smaller than the sum of its proper divisors (416944).

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

321104 is a wasteful number, since it uses less digits than its factorization.

321104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 321104 is about 566.6603921221. The cubic root of 321104 is about 68.4776064759.

Adding to 321104 its reverse (401123), we get a palindrome (722227).

The spelling of 321104 in words is "three hundred twenty-one thousand, one hundred four", and thus it is an iban number.