211308 has 12 divisors (see below), whose sum is σ = 493080. Its totient is φ = 70432.

The previous prime is 211297. The next prime is 211313. The reversal of 211308 is 803112.

It is a happy number.

211308 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is an unprimeable number.

211308 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8793 + ... + 8816.

It is an arithmetic number, because the mean of its divisors is an integer number (41090).

2²¹¹³⁰⁸ is an apocalyptic number.

It is an amenable number.

211308 is an abundant number, since it is smaller than the sum of its proper divisors (281772).

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

211308 is a wasteful number, since it uses less digits than its factorization.

211308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17616 (or 17614 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 211308 is about 459.6824991230. The cubic root of 211308 is about 59.5623713353.

The spelling of 211308 in words is "two hundred eleven thousand, three hundred eight".