320002231 has 2 divisors, whose sum is σ = 320002232. Its totient is φ = 320002230.

The previous prime is 320002229. The next prime is 320002283. The reversal of 320002231 is 132200023.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320002231 - 2¹ = 320002229 is a prime.

It is a super-2 number, since 2×320002231² = 204802855689954722, which contains 22 as substring.

Together with 320002229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320002201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160001115 + 160001116.

It is an arithmetic number, because the mean of its divisors is an integer number (160001116).

Almost surely, 2^320002231 is an apocalyptic number.

320002231 is a deficient number, since it is larger than the sum of its proper divisors (1).

320002231 is an equidigital number, since it uses as much as digits as its factorization.

320002231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320002231 is about 17888.6061782354. The cubic root of 320002231 is about 683.9919682321.

Adding to 320002231 its reverse (132200023), we get a palindrome (452202254).

The spelling of 320002231 in words is "three hundred twenty million, two thousand, two hundred thirty-one".