211680108 has 48 divisors (see below), whose sum is σ = 563643360. Its totient is φ = 68651712.

The previous prime is 211680103. The next prime is 211680163. The reversal of 211680108 is 801086112.

211680108 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (211680103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22491 + ... + 30482.

It is an arithmetic number, because the mean of its divisors is an integer number (11742570).

Almost surely, 2^211680108 is an apocalyptic number.

It is an amenable number.

211680108 is an abundant number, since it is smaller than the sum of its proper divisors (351963252).

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

211680108 is a wasteful number, since it uses less digits than its factorization.

211680108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53023 (or 53015 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 211680108 is about 14549.2304951155. The cubic root of 211680108 is about 595.9731343835.

The spelling of 211680108 in words is "two hundred eleven million, six hundred eighty thousand, one hundred eight".