213304307 has 2 divisors, whose sum is σ = 213304308. Its totient is φ = 213304306.

The previous prime is 213304271. The next prime is 213304361. The reversal of 213304307 is 703403312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213304307 - 2⁶ = 213304243 is a prime.

It is not a weakly prime, because it can be changed into another prime (213304387) 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, 106652153 + 106652154.

It is an arithmetic number, because the mean of its divisors is an integer number (106652154).

Almost surely, 2^213304307 is an apocalyptic number.

213304307 is a deficient number, since it is larger than the sum of its proper divisors (1).

213304307 is an equidigital number, since it uses as much as digits as its factorization.

213304307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 213304307 is about 14604.9411844074. The cubic root of 213304307 is about 597.4935319060.

Adding to 213304307 its reverse (703403312), we get a palindrome (916707619).

The spelling of 213304307 in words is "two hundred thirteen million, three hundred four thousand, three hundred seven".