353228321 has 2 divisors, whose sum is σ = 353228322. Its totient is φ = 353228320.

The previous prime is 353228299. The next prime is 353228327. The reversal of 353228321 is 123822353.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321700096 + 31528225 = 17936^2 + 5615^2 .

It is a cyclic number.

It is not a de Polignac number, because 353228321 - 2⁶ = 353228257 is a prime.

It is not a weakly prime, because it can be changed into another prime (353228327) 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 as a sum of consecutive naturals, namely, 176614160 + 176614161.

It is an arithmetic number, because the mean of its divisors is an integer number (176614161).

Almost surely, 2^353228321 is an apocalyptic number.

It is an amenable number.

353228321 is a deficient number, since it is larger than the sum of its proper divisors (1).

353228321 is an equidigital number, since it uses as much as digits as its factorization.

353228321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 353228321 is about 18794.3693961782. The cubic root of 353228321 is about 706.8900016725.

The spelling of 353228321 in words is "three hundred fifty-three million, two hundred twenty-eight thousand, three hundred twenty-one".