208030117 has 4 divisors (see below), whose sum is σ = 208410976. Its totient is φ = 207649260.

The previous prime is 208030111. The next prime is 208030153. The reversal of 208030117 is 711030802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 208030117 - 2¹¹ = 208028069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208030111) 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 in 3 ways as a sum of consecutive naturals, for example, 189609 + ... + 190702.

It is an arithmetic number, because the mean of its divisors is an integer number (52102744).

Almost surely, 2^208030117 is an apocalyptic number.

It is an amenable number.

208030117 is a deficient number, since it is larger than the sum of its proper divisors (380859).

208030117 is an equidigital number, since it uses as much as digits as its factorization.

208030117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380858.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 208030117 is about 14423.2491831764. The cubic root of 208030117 is about 592.5278089341.

Adding to 208030117 its reverse (711030802), we get a palindrome (919060919).

The spelling of 208030117 in words is "two hundred eight million, thirty thousand, one hundred seventeen".