208028113 has 2 divisors, whose sum is σ = 208028114. Its totient is φ = 208028112.

The previous prime is 208028111. The next prime is 208028147. The reversal of 208028113 is 311820802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208022929 + 5184 = 14423^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 208028113 - 2¹ = 208028111 is a prime.

Together with 208028111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (208028111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104014056 + 104014057.

It is an arithmetic number, because the mean of its divisors is an integer number (104014057).

Almost surely, 2^208028113 is an apocalyptic number.

It is an amenable number.

208028113 is a deficient number, since it is larger than the sum of its proper divisors (1).

208028113 is an equidigital number, since it uses as much as digits as its factorization.

208028113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 208028113 is about 14423.1797118389. The cubic root of 208028113 is about 592.5259062776.

Adding to 208028113 its reverse (311820802), we get a palindrome (519848915).

The spelling of 208028113 in words is "two hundred eight million, twenty-eight thousand, one hundred thirteen".