213667247 has 2 divisors, whose sum is σ = 213667248. Its totient is φ = 213667246.

The previous prime is 213667241. The next prime is 213667253. The reversal of 213667247 is 742766312.

It is a balanced prime because it is at equal distance from previous prime (213667241) and next prime (213667253).

It is a cyclic number.

It is not a de Polignac number, because 213667247 - 2⁴ = 213667231 is a prime.

It is equal to p_11792684 and since 213667247 and 11792684 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213667247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213667241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106833623 + 106833624.

It is an arithmetic number, because the mean of its divisors is an integer number (106833624).

Almost surely, 2^213667247 is an apocalyptic number.

213667247 is a deficient number, since it is larger than the sum of its proper divisors (1).

213667247 is an equidigital number, since it uses as much as digits as its factorization.

213667247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 213667247 is about 14617.3611503582. The cubic root of 213667247 is about 597.8322208401.

The spelling of 213667247 in words is "two hundred thirteen million, six hundred sixty-seven thousand, two hundred forty-seven".