23217201 has 24 divisors (see below), whose sum is σ = 39147264. Its totient is φ = 12983040.

The previous prime is 23217191. The next prime is 23217203. The reversal of 23217201 is 10271232.

It is not a de Polignac number, because 23217201 - 2⁵ = 23217169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23217203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 960 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (1631136).

Almost surely, 2^23217201 is an apocalyptic number.

23217201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23217201 is a deficient number, since it is larger than the sum of its proper divisors (15930063).

23217201 is a wasteful number, since it uses less digits than its factorization.

23217201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7901 (or 7898 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 23217201 is about 4818.4230822957. The cubic root of 23217201 is about 285.2790987057.

Adding to 23217201 its reverse (10271232), we get a palindrome (33488433).

The spelling of 23217201 in words is "twenty-three million, two hundred seventeen thousand, two hundred one".