22503313 has 4 divisors (see below), whose sum is σ = 25718080. Its totient is φ = 19288548.

The previous prime is 22503293. The next prime is 22503317. The reversal of 22503313 is 31330522.

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 22503313 - 2¹⁷ = 22372241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22503317) 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, 1607373 + ... + 1607386.

It is an arithmetic number, because the mean of its divisors is an integer number (6429520).

Almost surely, 2^22503313 is an apocalyptic number.

It is an amenable number.

22503313 is a deficient number, since it is larger than the sum of its proper divisors (3214767).

22503313 is an equidigital number, since it uses as much as digits as its factorization.

22503313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214766.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 22503313 is about 4743.7656982612. The cubic root of 22503313 is about 282.3246642170.

Adding to 22503313 its reverse (31330522), we get a palindrome (53833835).

The spelling of 22503313 in words is "twenty-two million, five hundred three thousand, three hundred thirteen".