23310221 has 8 divisors (see below), whose sum is σ = 25464864. Its totient is φ = 21161520.

The previous prime is 23310211. The next prime is 23310241. The reversal of 23310221 is 12201332.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23310221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23310196 and 23310205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23310211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12470 + ... + 14216.

It is an arithmetic number, because the mean of its divisors is an integer number (3183108).

Almost surely, 2^23310221 is an apocalyptic number.

It is an amenable number.

23310221 is a deficient number, since it is larger than the sum of its proper divisors (2154643).

23310221 is a wasteful number, since it uses less digits than its factorization.

23310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23310221 is about 4828.0659688948. The cubic root of 23310221 is about 285.6595824199.

Adding to 23310221 its reverse (12201332), we get a palindrome (35511553).

Subtracting from 23310221 its reverse (12201332), we obtain a square (11108889 = 3333²).

The spelling of 23310221 in words is "twenty-three million, three hundred ten thousand, two hundred twenty-one".