23003321 has 4 divisors (see below), whose sum is σ = 25094544. Its totient is φ = 20912100.

The previous prime is 23003303. The next prime is 23003327. The reversal of 23003321 is 12330032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-23003321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23003296 and 23003305.

It is not an unprimeable number, because it can be changed into a prime (23003327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045595 + ... + 1045616.

It is an arithmetic number, because the mean of its divisors is an integer number (6273636).

Almost surely, 2^23003321 is an apocalyptic number.

It is an amenable number.

23003321 is a deficient number, since it is larger than the sum of its proper divisors (2091223).

23003321 is a wasteful number, since it uses less digits than its factorization.

23003321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091222.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 23003321 is about 4796.1777489997. The cubic root of 23003321 is about 284.4003849818.

Adding to 23003321 its reverse (12330032), we get a palindrome (35333353).

Subtracting from 23003321 its reverse (12330032), we obtain a square (10673289 = 3267²).

The spelling of 23003321 in words is "twenty-three million, three thousand, three hundred twenty-one".