213243301 has 2 divisors, whose sum is σ = 213243302. Its totient is φ = 213243300.

The previous prime is 213243299. The next prime is 213243341. The reversal of 213243301 is 103342312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108180801 + 105062500 = 10401^2 + 10250^2 .

It is a cyclic number.

It is not a de Polignac number, because 213243301 - 2¹ = 213243299 is a prime.

Together with 213243299, 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 (213243341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106621650 + 106621651.

It is an arithmetic number, because the mean of its divisors is an integer number (106621651).

Almost surely, 2^213243301 is an apocalyptic number.

It is an amenable number.

213243301 is a deficient number, since it is larger than the sum of its proper divisors (1).

213243301 is an equidigital number, since it uses as much as digits as its factorization.

213243301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 213243301 is about 14602.8524953175. The cubic root of 213243301 is about 597.4365645206.

Adding to 213243301 its reverse (103342312), we get a palindrome (316585613).

The spelling of 213243301 in words is "two hundred thirteen million, two hundred forty-three thousand, three hundred one".