227812213 has 2 divisors, whose sum is σ = 227812214. Its totient is φ = 227812212.

The previous prime is 227812201. The next prime is 227812229. The reversal of 227812213 is 312218722.

227812213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161340804 + 66471409 = 12702^2 + 8153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227812213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227812513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113906106 + 113906107.

It is an arithmetic number, because the mean of its divisors is an integer number (113906107).

Almost surely, 2^227812213 is an apocalyptic number.

It is an amenable number.

227812213 is a deficient number, since it is larger than the sum of its proper divisors (1).

227812213 is an equidigital number, since it uses as much as digits as its factorization.

227812213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 28.

The square root of 227812213 is about 15093.4493406908. The cubic root of 227812213 is about 610.7437072604.

The spelling of 227812213 in words is "two hundred twenty-seven million, eight hundred twelve thousand, two hundred thirteen".