23123211 has 16 divisors (see below), whose sum is σ = 32783616. Its totient is φ = 14464736.

The previous prime is 23123189. The next prime is 23123231. The reversal of 23123211 is 11232132.

It is a cyclic number.

It is not a de Polignac number, because 23123211 - 2¹⁴ = 23106827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23123231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496 + ... + 6818.

It is an arithmetic number, because the mean of its divisors is an integer number (2048976).

Almost surely, 2^23123211 is an apocalyptic number.

23123211 is a deficient number, since it is larger than the sum of its proper divisors (9660405).

23123211 is a wasteful number, since it uses less digits than its factorization.

23123211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402.

The product of its digits is 72, while the sum is 15.

The square root of 23123211 is about 4808.6600004575. The cubic root of 23123211 is about 284.8936137243.

Adding to 23123211 its reverse (11232132), we get a palindrome (34355343).

It can be divided in two parts, 2 and 3123211, that added together give a palindrome (3123213).

The spelling of 23123211 in words is "twenty-three million, one hundred twenty-three thousand, two hundred eleven".