211493433 has 16 divisors (see below), whose sum is σ = 292129920. Its totient is φ = 135940224.

The previous prime is 211493363. The next prime is 211493437. The reversal of 211493433 is 334394112.

It is not a de Polignac number, because 211493433 - 2⁹ = 211492921 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211493433.

It is not an unprimeable number, because it can be changed into a prime (211493437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84285 + ... + 86757.

It is an arithmetic number, because the mean of its divisors is an integer number (18258120).

Almost surely, 2^211493433 is an apocalyptic number.

It is an amenable number.

211493433 is a deficient number, since it is larger than the sum of its proper divisors (80636487).

211493433 is a wasteful number, since it uses less digits than its factorization.

211493433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488.

The product of its digits is 7776, while the sum is 30.

The square root of 211493433 is about 14542.8137923856. The cubic root of 211493433 is about 595.7978919612.

The spelling of 211493433 in words is "two hundred eleven million, four hundred ninety-three thousand, four hundred thirty-three".