384320213 has 2 divisors, whose sum is σ = 384320214. Its totient is φ = 384320212.

The previous prime is 384320171. The next prime is 384320263. The reversal of 384320213 is 312023483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250177489 + 134142724 = 15817^2 + 11582^2 .

It is an emirp because it is prime and its reverse (312023483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 384320213 - 2⁶ = 384320149 is a prime.

It is a super-2 number, since 2×384320213² = 295404052240730738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384320263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192160106 + 192160107.

It is an arithmetic number, because the mean of its divisors is an integer number (192160107).

Almost surely, 2^384320213 is an apocalyptic number.

It is an amenable number.

384320213 is a deficient number, since it is larger than the sum of its proper divisors (1).

384320213 is an equidigital number, since it uses as much as digits as its factorization.

384320213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 384320213 is about 19604.0866402901. The cubic root of 384320213 is about 727.0502176795.

Adding to 384320213 its reverse (312023483), we get a palindrome (696343696).

The spelling of 384320213 in words is "three hundred eighty-four million, three hundred twenty thousand, two hundred thirteen".