106856219 has 2 divisors, whose sum is σ = 106856220. Its totient is φ = 106856218.

The previous prime is 106856177. The next prime is 106856249. The reversal of 106856219 is 912658601.

It is a strong prime.

It is an emirp because it is prime and its reverse (912658601) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106856219 is a prime.

It is a super-3 number, since 3×106856219³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (106856249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53428109 + 53428110.

It is an arithmetic number, because the mean of its divisors is an integer number (53428110).

Almost surely, 2^106856219 is an apocalyptic number.

106856219 is a deficient number, since it is larger than the sum of its proper divisors (1).

106856219 is an equidigital number, since it uses as much as digits as its factorization.

106856219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 106856219 is about 10337.1281795284. The cubic root of 106856219 is about 474.5331982844.

The spelling of 106856219 in words is "one hundred six million, eight hundred fifty-six thousand, two hundred nineteen".