321384 has 32 divisors (see below), whose sum is σ = 918720. Its totient is φ = 91776.

The previous prime is 321383. The next prime is 321397. The reversal of 321384 is 483123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 321384.

It is not an unprimeable number, because it can be changed into a prime (321383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789 + ... + 1124.

It is an arithmetic number, because the mean of its divisors is an integer number (28710).

2³²¹³⁸⁴ is an apocalyptic number.

It is an amenable number.

321384 is an abundant number, since it is smaller than the sum of its proper divisors (597336).

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

321384 is a wasteful number, since it uses less digits than its factorization.

321384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929 (or 1925 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 321384 is about 566.9073998459. The cubic root of 321384 is about 68.4975046598.

The spelling of 321384 in words is "three hundred twenty-one thousand, three hundred eighty-four".