320222231 has 4 divisors (see below), whose sum is σ = 365968272. Its totient is φ = 274476192.

The previous prime is 320222213. The next prime is 320222269. The reversal of 320222231 is 132222023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132222023 = 541 ⋅244403.

It is a cyclic number.

It is not a de Polignac number, because 320222231 - 2⁶ = 320222167 is a prime.

It is a super-2 number, since 2×320222231² = 205084554453234722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320222731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22873010 + ... + 22873023.

It is an arithmetic number, because the mean of its divisors is an integer number (91492068).

Almost surely, 2^320222231 is an apocalyptic number.

320222231 is a deficient number, since it is larger than the sum of its proper divisors (45746041).

320222231 is an equidigital number, since it uses as much as digits as its factorization.

320222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45746040.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 320222231 is about 17894.7542872206. The cubic root of 320222231 is about 684.1486793915.

Adding to 320222231 its reverse (132222023), we get a palindrome (452444254).

The spelling of 320222231 in words is "three hundred twenty million, two hundred twenty-two thousand, two hundred thirty-one".