213023201 has 2 divisors, whose sum is σ = 213023202. Its totient is φ = 213023200.

The previous prime is 213023179. The next prime is 213023257. The reversal of 213023201 is 102320312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183331600 + 29691601 = 13540^2 + 5449^2 .

It is a cyclic number.

It is not a de Polignac number, because 213023201 - 2²² = 208828897 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (213023101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106511600 + 106511601.

It is an arithmetic number, because the mean of its divisors is an integer number (106511601).

Almost surely, 2^213023201 is an apocalyptic number.

It is an amenable number.

213023201 is a deficient number, since it is larger than the sum of its proper divisors (1).

213023201 is an equidigital number, since it uses as much as digits as its factorization.

213023201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 213023201 is about 14595.3143508456. The cubic root of 213023201 is about 597.2309448450.

Adding to 213023201 its reverse (102320312), we get a palindrome (315343513).

The spelling of 213023201 in words is "two hundred thirteen million, twenty-three thousand, two hundred one".