1244322223 has 4 divisors (see below), whose sum is σ = 1247010208. Its totient is φ = 1241634240.

The previous prime is 1244322203. The next prime is 1244322239. The reversal of 1244322223 is 3222234421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244322223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244322203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343298 + ... + 1344223.

It is an arithmetic number, because the mean of its divisors is an integer number (311752552).

Almost surely, 2^1244322223 is an apocalyptic number.

1244322223 is a deficient number, since it is larger than the sum of its proper divisors (2687985).

1244322223 is an equidigital number, since it uses as much as digits as its factorization.

1244322223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687984.

The product of its digits is 4608, while the sum is 25.

The square root of 1244322223 is about 35274.9517788473. The cubic root of 1244322223 is about 1075.5838827005.

Adding to 1244322223 its reverse (3222234421), we get a palindrome (4466556644).

The spelling of 1244322223 in words is "one billion, two hundred forty-four million, three hundred twenty-two thousand, two hundred twenty-three".