214243109 has 2 divisors, whose sum is σ = 214243110. Its totient is φ = 214243108.

The previous prime is 214243093. The next prime is 214243121. The reversal of 214243109 is 901342412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110712484 + 103530625 = 10522^2 + 10175^2 .

It is a cyclic number.

It is not a de Polignac number, because 214243109 - 2⁴ = 214243093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214243189) 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, 107121554 + 107121555.

It is an arithmetic number, because the mean of its divisors is an integer number (107121555).

Almost surely, 2^214243109 is an apocalyptic number.

It is an amenable number.

214243109 is a deficient number, since it is larger than the sum of its proper divisors (1).

214243109 is an equidigital number, since it uses as much as digits as its factorization.

214243109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 214243109 is about 14637.0457743357. The cubic root of 214243109 is about 598.3688185043.

The spelling of 214243109 in words is "two hundred fourteen million, two hundred forty-three thousand, one hundred nine".