213065210 has 16 divisors (see below), whose sum is σ = 384732936. Its totient is φ = 84955968.

The previous prime is 213065197. The next prime is 213065213. The reversal of 213065210 is 12560312.

It can be written as a sum of positive squares in 4 ways, for example, as 122301481 + 90763729 = 11059^2 + 9527^2 .

It is not an unprimeable number, because it can be changed into a prime (213065213) 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, 30437 + ... + 36776.

Almost surely, 2^213065210 is an apocalyptic number.

213065210 is a deficient number, since it is larger than the sum of its proper divisors (171667726).

213065210 is a wasteful number, since it uses less digits than its factorization.

213065210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67537.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 213065210 is about 14596.7534061517. The cubic root of 213065210 is about 597.2702010161.

The spelling of 213065210 in words is "two hundred thirteen million, sixty-five thousand, two hundred ten".