213226147 has 2 divisors, whose sum is σ = 213226148. Its totient is φ = 213226146.

The previous prime is 213226109. The next prime is 213226157. The reversal of 213226147 is 741622312.

213226147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213226147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213226157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106613073 + 106613074.

It is an arithmetic number, because the mean of its divisors is an integer number (106613074).

Almost surely, 2^213226147 is an apocalyptic number.

213226147 is a deficient number, since it is larger than the sum of its proper divisors (1).

213226147 is an equidigital number, since it uses as much as digits as its factorization.

213226147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 213226147 is about 14602.2651325060. The cubic root of 213226147 is about 597.4205441632.

Adding to 213226147 its reverse (741622312), we get a palindrome (954848459).

The spelling of 213226147 in words is "two hundred thirteen million, two hundred twenty-six thousand, one hundred forty-seven".