213213347 has 2 divisors, whose sum is σ = 213213348. Its totient is φ = 213213346.

The previous prime is 213213317. The next prime is 213213349. The reversal of 213213347 is 743312312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213213347 - 2¹⁶ = 213147811 is a prime.

Together with 213213349, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213213349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106606673 + 106606674.

It is an arithmetic number, because the mean of its divisors is an integer number (106606674).

Almost surely, 2^213213347 is an apocalyptic number.

213213347 is a deficient number, since it is larger than the sum of its proper divisors (1).

213213347 is an equidigital number, since it uses as much as digits as its factorization.

213213347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 26.

The square root of 213213347 is about 14601.8268377625. The cubic root of 213213347 is about 597.4085895068.

Adding to 213213347 its reverse (743312312), we get a palindrome (956525659).

The spelling of 213213347 in words is "two hundred thirteen million, two hundred thirteen thousand, three hundred forty-seven".