208753213 has 4 divisors (see below), whose sum is σ = 208902780. Its totient is φ = 208603648.

The previous prime is 208753177. The next prime is 208753219. The reversal of 208753213 is 312357802.

208753213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67190809 + 141562404 = 8197^2 + 11898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208753213 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 (208753219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72670 + ... + 75487.

It is an arithmetic number, because the mean of its divisors is an integer number (52225695).

Almost surely, 2^208753213 is an apocalyptic number.

It is an amenable number.

208753213 is a deficient number, since it is larger than the sum of its proper divisors (149567).

208753213 is a wasteful number, since it uses less digits than its factorization.

208753213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149566.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 208753213 is about 14448.2944668220. The cubic root of 208753213 is about 593.2135414082.

The spelling of 208753213 in words is "two hundred eight million, seven hundred fifty-three thousand, two hundred thirteen".