236213213 has 2 divisors, whose sum is σ = 236213214. Its totient is φ = 236213212.

The previous prime is 236213171. The next prime is 236213227. The reversal of 236213213 is 312312632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156700324 + 79512889 = 12518^2 + 8917^2 .

It is a cyclic number.

It is not a de Polignac number, because 236213213 - 2¹⁰ = 236212189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236213293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118106606 + 118106607.

It is an arithmetic number, because the mean of its divisors is an integer number (118106607).

Almost surely, 2^236213213 is an apocalyptic number.

It is an amenable number.

236213213 is a deficient number, since it is larger than the sum of its proper divisors (1).

236213213 is an equidigital number, since it uses as much as digits as its factorization.

236213213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

The square root of 236213213 is about 15369.2294211519. The cubic root of 236213213 is about 618.1607065920.

Adding to 236213213 its reverse (312312632), we get a palindrome (548525845).

The spelling of 236213213 in words is "two hundred thirty-six million, two hundred thirteen thousand, two hundred thirteen".