103321 has 4 divisors (see below), whose sum is σ = 103972. Its totient is φ = 102672.

The previous prime is 103319. The next prime is 103333. The reversal of 103321 is 123301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 123301 = 17 ⋅7253.

It can be written as a sum of positive squares in 2 ways, for example, as 35721 + 67600 = 189^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 103321 - 2¹ = 103319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103298 and 103307.

It is not an unprimeable number, because it can be changed into a prime (103391) 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, 91 + ... + 463.

It is an arithmetic number, because the mean of its divisors is an integer number (25993).

2¹⁰³³²¹ is an apocalyptic number.

It is an amenable number.

103321 is a deficient number, since it is larger than the sum of its proper divisors (651).

103321 is an equidigital number, since it uses as much as digits as its factorization.

103321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 103321 is about 321.4358411876. The cubic root of 103321 is about 46.9241268655.

Adding to 103321 its reverse (123301), we get a palindrome (226622).

It can be divided in two parts, 103 and 321, that added together give a palindrome (424).

The spelling of 103321 in words is "one hundred three thousand, three hundred twenty-one", and thus it is an iban number.