227819213 has 2 divisors, whose sum is σ = 227819214. Its totient is φ = 227819212.

The previous prime is 227819197. The next prime is 227819231. The reversal of 227819213 is 312918722.

Together with next prime (227819231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203975524 + 23843689 = 14282^2 + 4883^2 .

It is a cyclic number.

It is not a de Polignac number, because 227819213 - 2⁴ = 227819197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227819113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113909606 + 113909607.

It is an arithmetic number, because the mean of its divisors is an integer number (113909607).

Almost surely, 2^227819213 is an apocalyptic number.

It is an amenable number.

227819213 is a deficient number, since it is larger than the sum of its proper divisors (1).

227819213 is an equidigital number, since it uses as much as digits as its factorization.

227819213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 227819213 is about 15093.6812275866. The cubic root of 227819213 is about 610.7499626496.

The spelling of 227819213 in words is "two hundred twenty-seven million, eight hundred nineteen thousand, two hundred thirteen".