214428911 has 2 divisors, whose sum is σ = 214428912. Its totient is φ = 214428910.

The previous prime is 214428901. The next prime is 214428919. The reversal of 214428911 is 119824412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214428911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214428919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107214455 + 107214456.

It is an arithmetic number, because the mean of its divisors is an integer number (107214456).

Almost surely, 2^214428911 is an apocalyptic number.

214428911 is a deficient number, since it is larger than the sum of its proper divisors (1).

214428911 is an equidigital number, since it uses as much as digits as its factorization.

214428911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 32.

The square root of 214428911 is about 14643.3913763172. The cubic root of 214428911 is about 598.5417466629.

The spelling of 214428911 in words is "two hundred fourteen million, four hundred twenty-eight thousand, nine hundred eleven".