23083221 has 16 divisors (see below), whose sum is σ = 35328128. Its totient is φ = 13132800.

The previous prime is 23083211. The next prime is 23083223. The reversal of 23083221 is 12238032.

It is not a de Polignac number, because 23083221 - 2¹¹ = 23081173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is the 4805-th Hogben number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23083223) by changing a digit.

It is a nontrivial repunit in base 4804.

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, 2781 + ... + 7341.

It is an arithmetic number, because the mean of its divisors is an integer number (2208008).

Almost surely, 2^23083221 is an apocalyptic number.

23083221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23083221 is a deficient number, since it is larger than the sum of its proper divisors (12244907).

23083221 is a wasteful number, since it uses less digits than its factorization.

23083221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 23083221 is about 4804.5000780518. The cubic root of 23083221 is about 284.7292843315.

The spelling of 23083221 in words is "twenty-three million, eighty-three thousand, two hundred twenty-one".