23031211 has 16 divisors (see below), whose sum is σ = 28915200. Its totient is φ = 17886528.

The previous prime is 23031167. The next prime is 23031227. The reversal of 23031211 is 11213032.

It is a cyclic number.

It is not a de Polignac number, because 23031211 - 2⁷ = 23031083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23031191 and 23031200.

It is not an unprimeable number, because it can be changed into a prime (23031251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706 + ... + 6823.

It is an arithmetic number, because the mean of its divisors is an integer number (1807200).

Almost surely, 2^23031211 is an apocalyptic number.

23031211 is a deficient number, since it is larger than the sum of its proper divisors (5883989).

23031211 is a wasteful number, since it uses less digits than its factorization.

23031211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 23031211 is about 4799.0843918398. The cubic root of 23031211 is about 284.5152774250.

Adding to 23031211 its reverse (11213032), we get a palindrome (34244243).

The spelling of 23031211 in words is "twenty-three million, thirty-one thousand, two hundred eleven".