365343221 has 2 divisors, whose sum is σ = 365343222. Its totient is φ = 365343220.

The previous prime is 365343211. The next prime is 365343241. The reversal of 365343221 is 122343563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284091025 + 81252196 = 16855^2 + 9014^2 .

It is an emirp because it is prime and its reverse (122343563) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-365343221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (365343211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182671610 + 182671611.

It is an arithmetic number, because the mean of its divisors is an integer number (182671611).

Almost surely, 2^365343221 is an apocalyptic number.

It is an amenable number.

365343221 is a deficient number, since it is larger than the sum of its proper divisors (1).

365343221 is an equidigital number, since it uses as much as digits as its factorization.

365343221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 29.

The square root of 365343221 is about 19113.9535680089. The cubic root of 365343221 is about 714.8808845208.

Adding to 365343221 its reverse (122343563), we get a palindrome (487686784).

The spelling of 365343221 in words is "three hundred sixty-five million, three hundred forty-three thousand, two hundred twenty-one".