320540611 has 4 divisors (see below), whose sum is σ = 327360672. Its totient is φ = 313720552.

The previous prime is 320540603. The next prime is 320540617. The reversal of 320540611 is 116045023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320540611 - 2³ = 320540603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320540617) 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, 3409960 + ... + 3410053.

It is an arithmetic number, because the mean of its divisors is an integer number (81840168).

Almost surely, 2^320540611 is an apocalyptic number.

320540611 is a deficient number, since it is larger than the sum of its proper divisors (6820061).

320540611 is an equidigital number, since it uses as much as digits as its factorization.

320540611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820060.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 320540611 is about 17903.6479802302. The cubic root of 320540611 is about 684.3753418846.

Adding to 320540611 its reverse (116045023), we get a palindrome (436585634).

The spelling of 320540611 in words is "three hundred twenty million, five hundred forty thousand, six hundred eleven".