211530323 has 8 divisors (see below), whose sum is σ = 214940928. Its totient is φ = 208127304.

The previous prime is 211530299. The next prime is 211530349. The reversal of 211530323 is 323035112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211530323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211530295 and 211530304.

It is not an unprimeable number, because it can be changed into a prime (211530353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86090 + ... + 88512.

It is an arithmetic number, because the mean of its divisors is an integer number (26867616).

Almost surely, 2^211530323 is an apocalyptic number.

211530323 is a deficient number, since it is larger than the sum of its proper divisors (3410605).

211530323 is a wasteful number, since it uses less digits than its factorization.

211530323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 211530323 is about 14544.0820610996. The cubic root of 211530323 is about 595.8325308719.

Adding to 211530323 its reverse (323035112), we get a palindrome (534565435).

The spelling of 211530323 in words is "two hundred eleven million, five hundred thirty thousand, three hundred twenty-three".