22143313 has 4 divisors (see below), whose sum is σ = 22155120. Its totient is φ = 22131508.

The previous prime is 22143311. The next prime is 22143343. The reversal of 22143313 is 31334122.

22143313 is nontrivially palindromic in base 16.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31334122 = 2 ⋅15667061.

It is a cyclic number.

It is not a de Polignac number, because 22143313 - 2¹ = 22143311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22143311) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2395 + ... + 7072.

It is an arithmetic number, because the mean of its divisors is an integer number (5538780).

Almost surely, 2^22143313 is an apocalyptic number.

It is an amenable number.

22143313 is a deficient number, since it is larger than the sum of its proper divisors (11807).

22143313 is an equidigital number, since it uses as much as digits as its factorization.

22143313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11806.

The product of its digits is 432, while the sum is 19.

The square root of 22143313 is about 4705.6681778468. The cubic root of 22143313 is about 280.8110540273.

Adding to 22143313 its reverse (31334122), we get a palindrome (53477435).

It can be divided in two parts, 221 and 43313, that added together give a palindrome (43534).

The spelling of 22143313 in words is "twenty-two million, one hundred forty-three thousand, three hundred thirteen".