320611 has 2 divisors, whose sum is σ = 320612. Its totient is φ = 320610.

The previous prime is 320609. The next prime is 320627. The reversal of 320611 is 116023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320611 - 2¹ = 320609 is a prime.

Together with 320609, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 320591 and 320600.

It is not a weakly prime, because it can be changed into another prime (320011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160305 + 160306.

It is an arithmetic number, because the mean of its divisors is an integer number (160306).

2³²⁰⁶¹¹ is an apocalyptic number.

320611 is a deficient number, since it is larger than the sum of its proper divisors (1).

320611 is an equidigital number, since it uses as much as digits as its factorization.

320611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 320611 is about 566.2252202084. The cubic root of 320611 is about 68.4425433270.

Adding to 320611 its reverse (116023), we get a palindrome (436634).

The spelling of 320611 in words is "three hundred twenty thousand, six hundred eleven".