384350321 has 2 divisors, whose sum is σ = 384350322. Its totient is φ = 384350320.

The previous prime is 384350293. The next prime is 384350347. The reversal of 384350321 is 123053483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382750096 + 1600225 = 19564^2 + 1265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-384350321 is a prime.

It is a Chen prime.

It is equal to p_20545616 and since 384350321 and 20545616 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (384350521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192175160 + 192175161.

It is an arithmetic number, because the mean of its divisors is an integer number (192175161).

Almost surely, 2^384350321 is an apocalyptic number.

It is an amenable number.

384350321 is a deficient number, since it is larger than the sum of its proper divisors (1).

384350321 is an equidigital number, since it uses as much as digits as its factorization.

384350321 is an odious number, because the sum of its binary digits is odd.

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

The square root of 384350321 is about 19604.8545263667. The cubic root of 384350321 is about 727.0692031120.

The spelling of 384350321 in words is "three hundred eighty-four million, three hundred fifty thousand, three hundred twenty-one".