385217111 has 2 divisors, whose sum is σ = 385217112. Its totient is φ = 385217110.

The previous prime is 385217089. The next prime is 385217137. The reversal of 385217111 is 111712583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385217111 - 2⁶ = 385217047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385217141) 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, 192608555 + 192608556.

It is an arithmetic number, because the mean of its divisors is an integer number (192608556).

Almost surely, 2^385217111 is an apocalyptic number.

385217111 is a deficient number, since it is larger than the sum of its proper divisors (1).

385217111 is an equidigital number, since it uses as much as digits as its factorization.

385217111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 29.

The square root of 385217111 is about 19626.9485911590. The cubic root of 385217111 is about 727.6153568997.

Adding to 385217111 its reverse (111712583), we get a palindrome (496929694).

The spelling of 385217111 in words is "three hundred eighty-five million, two hundred seventeen thousand, one hundred eleven".