213044166 has 12 divisors (see below), whose sum is σ = 461595732. Its totient is φ = 71014716.

The previous prime is 213044129. The next prime is 213044171. The reversal of 213044166 is 661440312.

213044166 is a `hidden beast` number, since 213 + 0 + 441 + 6 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5917876 + ... + 5917911.

It is an arithmetic number, because the mean of its divisors is an integer number (38466311).

Almost surely, 2^213044166 is an apocalyptic number.

213044166 is an abundant number, since it is smaller than the sum of its proper divisors (248551566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213044166 is a wasteful number, since it uses less digits than its factorization.

213044166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11835795 (or 11835792 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 213044166 is about 14596.0325431262. The cubic root of 213044166 is about 597.2505366640.

Adding to 213044166 its reverse (661440312), we get a palindrome (874484478).

The spelling of 213044166 in words is "two hundred thirteen million, forty-four thousand, one hundred sixty-six".