320220133 has 4 divisors (see below), whose sum is σ = 320436108. Its totient is φ = 320004160.

The previous prime is 320220119. The next prime is 320220137. The reversal of 320220133 is 331022023.

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

It can be written as a sum of positive squares in 2 ways, for example, as 220879044 + 99341089 = 14862^2 + 9967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320220133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320220137) 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, 105748 + ... + 108733.

It is an arithmetic number, because the mean of its divisors is an integer number (80109027).

Almost surely, 2^320220133 is an apocalyptic number.

It is an amenable number.

320220133 is a deficient number, since it is larger than the sum of its proper divisors (215975).

320220133 is a wasteful number, since it uses less digits than its factorization.

320220133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215974.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 320220133 is about 17894.6956665935. The cubic root of 320220133 is about 684.1471852759.

Adding to 320220133 its reverse (331022023), we get a palindrome (651242156).

The spelling of 320220133 in words is "three hundred twenty million, two hundred twenty thousand, one hundred thirty-three".