211393 has 16 divisors (see below), whose sum is σ = 274176. Its totient is φ = 158400.

The previous prime is 211373. The next prime is 211403. The reversal of 211393 is 393112.

211393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211393.

It is not an unprimeable number, because it can be changed into a prime (211313) 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, 2043 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (17136).

2²¹¹³⁹³ is an apocalyptic number.

211393 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

211393 is a deficient number, since it is larger than the sum of its proper divisors (62783).

211393 is a wasteful number, since it uses less digits than its factorization.

211393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144.

The product of its digits is 162, while the sum is 19.

The square root of 211393 is about 459.7749449459. The cubic root of 211393 is about 59.5703567135.

The spelling of 211393 in words is "two hundred eleven thousand, three hundred ninety-three".