321386 has 16 divisors (see below), whose sum is σ = 532224. Its totient is φ = 144624.

The previous prime is 321383. The next prime is 321397. The reversal of 321386 is 683123.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 321386.

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

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 in 7 ways as a sum of consecutive naturals, for example, 1091 + ... + 1353.

It is an arithmetic number, because the mean of its divisors is an integer number (33264).

2³²¹³⁸⁶ is an apocalyptic number.

321386 is a deficient number, since it is larger than the sum of its proper divisors (210838).

321386 is a wasteful number, since it uses less digits than its factorization.

321386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its digits is 864, while the sum is 23.

The square root of 321386 is about 566.9091637996. The cubic root of 321386 is about 68.4976467481.

It can be divided in two parts, 321 and 386, that added together give a palindrome (707).

The spelling of 321386 in words is "three hundred twenty-one thousand, three hundred eighty-six".