213341237 has 2 divisors, whose sum is σ = 213341238. Its totient is φ = 213341236.

The previous prime is 213341221. The next prime is 213341239. The reversal of 213341237 is 732143312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189585361 + 23755876 = 13769^2 + 4874^2 .

It is a cyclic number.

It is not a de Polignac number, because 213341237 - 2⁴ = 213341221 is a prime.

Together with 213341239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213341239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106670618 + 106670619.

It is an arithmetic number, because the mean of its divisors is an integer number (106670619).

Almost surely, 2^213341237 is an apocalyptic number.

It is an amenable number.

213341237 is a deficient number, since it is larger than the sum of its proper divisors (1).

213341237 is an equidigital number, since it uses as much as digits as its factorization.

213341237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 26.

The square root of 213341237 is about 14606.2054278310. The cubic root of 213341237 is about 597.5280118518.

Adding to 213341237 its reverse (732143312), we get a palindrome (945484549).

The spelling of 213341237 in words is "two hundred thirteen million, three hundred forty-one thousand, two hundred thirty-seven".