22403213 has 4 divisors (see below), whose sum is σ = 25603680. Its totient is φ = 19202748.

The previous prime is 22403207. The next prime is 22403231. The reversal of 22403213 is 31230422.

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 cyclic number.

It is not a de Polignac number, because 22403213 - 2⁴ = 22403197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22403191 and 22403200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22403233) 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 3 ways as a sum of consecutive naturals, for example, 1600223 + ... + 1600236.

It is an arithmetic number, because the mean of its divisors is an integer number (6400920).

Almost surely, 2^22403213 is an apocalyptic number.

It is an amenable number.

22403213 is a deficient number, since it is larger than the sum of its proper divisors (3200467).

22403213 is an equidigital number, since it uses as much as digits as its factorization.

22403213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200466.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22403213 is about 4733.2032493862. The cubic root of 22403213 is about 281.9054265971.

Adding to 22403213 its reverse (31230422), we get a palindrome (53633635).

The spelling of 22403213 in words is "twenty-two million, four hundred three thousand, two hundred thirteen".