23217823 has 8 divisors (see below), whose sum is σ = 23686992. Its totient is φ = 22753536.

The previous prime is 23217797. The next prime is 23217841. The reversal of 23217823 is 32871232.

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

It is a cyclic number.

It is not a de Polignac number, because 23217823 - 2¹⁷ = 23086751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23217791 and 23217800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23212823) 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 7 ways as a sum of consecutive naturals, for example, 9261 + ... + 11497.

It is an arithmetic number, because the mean of its divisors is an integer number (2960874).

Almost surely, 2^23217823 is an apocalyptic number.

23217823 is a deficient number, since it is larger than the sum of its proper divisors (469169).

23217823 is a wasteful number, since it uses less digits than its factorization.

23217823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441.

The product of its digits is 4032, while the sum is 28.

The square root of 23217823 is about 4818.4876258013. The cubic root of 23217823 is about 285.2816462711.

The spelling of 23217823 in words is "twenty-three million, two hundred seventeen thousand, eight hundred twenty-three".