320220011 has 16 divisors (see below), whose sum is σ = 338722560. Its totient is φ = 302396640.

The previous prime is 320219983. The next prime is 320220023. The reversal of 320220011 is 110022023.

It is a happy number.

It is not a de Polignac number, because 320220011 - 2⁶ = 320219947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320219974 and 320220001.

It is not an unprimeable number, because it can be changed into a prime (320220031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160820 + ... + 162798.

It is an arithmetic number, because the mean of its divisors is an integer number (21170160).

Almost surely, 2^320220011 is an apocalyptic number.

320220011 is a deficient number, since it is larger than the sum of its proper divisors (18502549).

320220011 is a wasteful number, since it uses less digits than its factorization.

320220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 320220011 is about 17894.6922577618. The cubic root of 320220011 is about 684.1470983919.

Adding to 320220011 its reverse (110022023), we get a palindrome (430242034).

The spelling of 320220011 in words is "three hundred twenty million, two hundred twenty thousand, eleven".