211664312 has 32 divisors (see below), whose sum is σ = 406728000. Its totient is φ = 103219584.

The previous prime is 211664293. The next prime is 211664347. The reversal of 211664312 is 213466112.

It is a congruent number.

It is an unprimeable number.

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, 130418 + ... + 132030.

It is an arithmetic number, because the mean of its divisors is an integer number (12710250).

Almost surely, 2^211664312 is an apocalyptic number.

It is an amenable number.

211664312 is a deficient number, since it is larger than the sum of its proper divisors (195063688).

211664312 is a wasteful number, since it uses less digits than its factorization.

211664312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2011 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 211664312 is about 14548.6876384092. The cubic root of 211664312 is about 595.9583097725.

The spelling of 211664312 in words is "two hundred eleven million, six hundred sixty-four thousand, three hundred twelve".