213723227 has 2 divisors, whose sum is σ = 213723228. Its totient is φ = 213723226.

The previous prime is 213723221. The next prime is 213723253. The reversal of 213723227 is 722327312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213723227 - 2⁶ = 213723163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213723227.

It is not a weakly prime, because it can be changed into another prime (213723221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106861613 + 106861614.

It is an arithmetic number, because the mean of its divisors is an integer number (106861614).

Almost surely, 2^213723227 is an apocalyptic number.

213723227 is a deficient number, since it is larger than the sum of its proper divisors (1).

213723227 is an equidigital number, since it uses as much as digits as its factorization.

213723227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 29.

The square root of 213723227 is about 14619.2758712598. The cubic root of 213723227 is about 597.8844261982.

The spelling of 213723227 in words is "two hundred thirteen million, seven hundred twenty-three thousand, two hundred twenty-seven".