211308168 has 32 divisors (see below), whose sum is σ = 528860160. Its totient is φ = 70357440.

The previous prime is 211308133. The next prime is 211308179. The reversal of 211308168 is 861803112.

It is a super-2 number, since 2×211308168² = 89302283727032448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19513 + ... + 28343.

It is an arithmetic number, because the mean of its divisors is an integer number (16526880).

Almost surely, 2^211308168 is an apocalyptic number.

It is an amenable number.

211308168 is an abundant number, since it is smaller than the sum of its proper divisors (317551992).

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

211308168 is a wasteful number, since it uses less digits than its factorization.

211308168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9837 (or 9833 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 211308168 is about 14536.4427560528. The cubic root of 211308168 is about 595.6238712030.

The spelling of 211308168 in words is "two hundred eleven million, three hundred eight thousand, one hundred sixty-eight".