23530211 has 2 divisors, whose sum is σ = 23530212. Its totient is φ = 23530210.

The previous prime is 23530207. The next prime is 23530217. The reversal of 23530211 is 11203532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23530211 - 2² = 23530207 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23530211.

It is not a weakly prime, because it can be changed into another prime (23530217) 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 as a sum of consecutive naturals, namely, 11765105 + 11765106.

It is an arithmetic number, because the mean of its divisors is an integer number (11765106).

Almost surely, 2^23530211 is an apocalyptic number.

23530211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23530211 is an equidigital number, since it uses as much as digits as its factorization.

23530211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 23530211 is about 4850.7948833155. The cubic root of 23530211 is about 286.5554067668. Note that the first 3 decimals are identical.

Adding to 23530211 its reverse (11203532), we get a palindrome (34733743).

The spelling of 23530211 in words is "twenty-three million, five hundred thirty thousand, two hundred eleven".