213324304397 has 2 divisors, whose sum is σ = 213324304398. Its totient is φ = 213324304396.

The previous prime is 213324304393. The next prime is 213324304447. The reversal of 213324304397 is 793403423312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209604646276 + 3719658121 = 457826^2 + 60989^2 .

It is a cyclic number.

It is not a de Polignac number, because 213324304397 - 2² = 213324304393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213324304393) 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, 106662152198 + 106662152199.

It is an arithmetic number, because the mean of its divisors is an integer number (106662152199).

Almost surely, 2^213324304397 is an apocalyptic number.

It is an amenable number.

213324304397 is a deficient number, since it is larger than the sum of its proper divisors (1).

213324304397 is an equidigital number, since it uses as much as digits as its factorization.

213324304397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 41.

The spelling of 213324304397 in words is "two hundred thirteen billion, three hundred twenty-four million, three hundred four thousand, three hundred ninety-seven".