320221319 has 4 divisors (see below), whose sum is σ = 349332360. Its totient is φ = 291110280.

The previous prime is 320221313. The next prime is 320221327. The reversal of 320221319 is 913122023.

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 320221319 - 2⁴ = 320221303 is a prime.

It is a super-2 number, since 2×320221319² = 205083386284199522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320221294 and 320221303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320221313) 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, 14555504 + ... + 14555525.

It is an arithmetic number, because the mean of its divisors is an integer number (87333090).

Almost surely, 2^320221319 is an apocalyptic number.

320221319 is a deficient number, since it is larger than the sum of its proper divisors (29111041).

320221319 is a wasteful number, since it uses less digits than its factorization.

320221319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29111040.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 320221319 is about 17894.7288048744. The cubic root of 320221319 is about 684.1480299006.

The spelling of 320221319 in words is "three hundred twenty million, two hundred twenty-one thousand, three hundred nineteen".