304012213 has 2 divisors, whose sum is σ = 304012214. Its totient is φ = 304012212.

The previous prime is 304012211. The next prime is 304012231. The reversal of 304012213 is 312210403.

It is a happy number.

Together with next prime (304012231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212197489 + 91814724 = 14567^2 + 9582^2 .

It is a cyclic number.

It is not a de Polignac number, because 304012213 - 2¹ = 304012211 is a prime.

Together with 304012211, 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 (304012211) 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, 152006106 + 152006107.

It is an arithmetic number, because the mean of its divisors is an integer number (152006107).

Almost surely, 2^304012213 is an apocalyptic number.

It is an amenable number.

304012213 is a deficient number, since it is larger than the sum of its proper divisors (1).

304012213 is an equidigital number, since it uses as much as digits as its factorization.

304012213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 304012213 is about 17435.9460024399. The cubic root of 304012213 is about 672.4040855826.

Adding to 304012213 its reverse (312210403), we get a palindrome (616222616).

The spelling of 304012213 in words is "three hundred four million, twelve thousand, two hundred thirteen".