1224244313 has 4 divisors (see below), whose sum is σ = 1233884160. Its totient is φ = 1214604468.

The previous prime is 1224244289. The next prime is 1224244327. The reversal of 1224244313 is 3134424221.

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 an emirpimes, since its reverse is a distinct semiprime: 3134424221 = 22063 ⋅142067.

It is a cyclic number.

It is not a de Polignac number, because 1224244313 - 2⁶ = 1224244249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224244393) 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, 4819733 + ... + 4819986.

It is an arithmetic number, because the mean of its divisors is an integer number (308471040).

Almost surely, 2^1224244313 is an apocalyptic number.

It is an amenable number.

1224244313 is a deficient number, since it is larger than the sum of its proper divisors (9639847).

1224244313 is an equidigital number, since it uses as much as digits as its factorization.

1224244313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9639846.

The product of its digits is 4608, while the sum is 26.

The square root of 1224244313 is about 34989.2028060086. The cubic root of 1224244313 is about 1069.7674147275.

Adding to 1224244313 its reverse (3134424221), we get a palindrome (4358668534).

The spelling of 1224244313 in words is "one billion, two hundred twenty-four million, two hundred forty-four thousand, three hundred thirteen".