208113133 has 8 divisors (see below), whose sum is σ = 225044352. Its totient is φ = 191702976.

The previous prime is 208113127. The next prime is 208113161. The reversal of 208113133 is 331311802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208113133 is a prime.

It is a super-2 number, since 2×208113133² = 86622152254151378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208113173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129435 + ... + 131032.

It is an arithmetic number, because the mean of its divisors is an integer number (28130544).

Almost surely, 2^208113133 is an apocalyptic number.

It is an amenable number.

208113133 is a deficient number, since it is larger than the sum of its proper divisors (16931219).

208113133 is a wasteful number, since it uses less digits than its factorization.

208113133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260531.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 208113133 is about 14426.1267497551. The cubic root of 208113133 is about 592.6066160280.

Adding to 208113133 its reverse (331311802), we get a palindrome (539424935).

The spelling of 208113133 in words is "two hundred eight million, one hundred thirteen thousand, one hundred thirty-three".