320221382 has 16 divisors (see below), whose sum is σ = 533968512. Its totient is φ = 143026560.

The previous prime is 320221381. The next prime is 320221397. The reversal of 320221382 is 283122023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320221381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197843 + ... + 199454.

It is an arithmetic number, because the mean of its divisors is an integer number (33373032).

Almost surely, 2^320221382 is an apocalyptic number.

320221382 is a deficient number, since it is larger than the sum of its proper divisors (213747130).

320221382 is a wasteful number, since it uses less digits than its factorization.

320221382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397343.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 320221382 is about 17894.7305651692. The cubic root of 320221382 is about 684.1480747668.

The spelling of 320221382 in words is "three hundred twenty million, two hundred twenty-one thousand, three hundred eighty-two".