321416 has 8 divisors (see below), whose sum is σ = 602670. Its totient is φ = 160704.

The previous prime is 321413. The next prime is 321427. The reversal of 321416 is 614123.

It can be written as a sum of positive squares in only one way, i.e., 198916 + 122500 = 446^2 + 350^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 321394 and 321403.

It is not an unprimeable number, because it can be changed into a prime (321413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20081 + ... + 20096.

2³²¹⁴¹⁶ is an apocalyptic number.

It is an amenable number.

321416 is a deficient number, since it is larger than the sum of its proper divisors (281254).

321416 is a wasteful number, since it uses less digits than its factorization.

321416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40183 (or 40179 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 321416 is about 566.9356224476. The cubic root of 321416 is about 68.4997780020.

Adding to 321416 its reverse (614123), we get a palindrome (935539).

It can be divided in two parts, 321 and 416, that added together give a palindrome (737).

The spelling of 321416 in words is "three hundred twenty-one thousand, four hundred sixteen".