208030513 has 8 divisors (see below), whose sum is σ = 220757832. Its totient is φ = 195357696.

The previous prime is 208030481. The next prime is 208030523. The reversal of 208030513 is 315030802.

It can be written as a sum of positive squares in 4 ways, for example, as 56445169 + 151585344 = 7513^2 + 12312^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 208030513 - 2⁵ = 208030481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208030523) 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 7 ways as a sum of consecutive naturals, for example, 5620 + ... + 21157.

It is an arithmetic number, because the mean of its divisors is an integer number (27594729).

Almost surely, 2^208030513 is an apocalyptic number.

It is an amenable number.

208030513 is a deficient number, since it is larger than the sum of its proper divisors (12727319).

208030513 is a wasteful number, since it uses less digits than its factorization.

208030513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27251.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 208030513 is about 14423.2629110060. The cubic root of 208030513 is about 592.5281849067.

The spelling of 208030513 in words is "two hundred eight million, thirty thousand, five hundred thirteen".