109321 has 2 divisors, whose sum is σ = 109322. Its totient is φ = 109320.

The previous prime is 109313. The next prime is 109331. The reversal of 109321 is 123901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90000 + 19321 = 300^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 109321 - 2³ = 109313 is a prime.

109321 is a lucky number.

It is equal to p₁₀₃₉₃ and since 109321 and 10393 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 109295 and 109304.

It is not a weakly prime, because it can be changed into another prime (109331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54660 + 54661.

It is an arithmetic number, because the mean of its divisors is an integer number (54661).

2¹⁰⁹³²¹ is an apocalyptic number.

It is an amenable number.

109321 is a deficient number, since it is larger than the sum of its proper divisors (1).

109321 is an equidigital number, since it uses as much as digits as its factorization.

109321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 109321 is about 330.6372634777. The cubic root of 109321 is about 47.8154079283.

The spelling of 109321 in words is "one hundred nine thousand, three hundred twenty-one".