1244230313 has 4 divisors (see below), whose sum is σ = 1255645380. Its totient is φ = 1232815248.

The previous prime is 1244230307. The next prime is 1244230319. The reversal of 1244230313 is 3130324421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3130324421 = 7 ⋅447189203.

It is an interprime number because it is at equal distance from previous prime (1244230307) and next prime (1244230319).

It can be written as a sum of positive squares in 2 ways, for example, as 353327209 + 890903104 = 18797^2 + 29848^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244230313 - 2⁶ = 1244230249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244230319) 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, 5707370 + ... + 5707587.

It is an arithmetic number, because the mean of its divisors is an integer number (313911345).

Almost surely, 2^1244230313 is an apocalyptic number.

It is an amenable number.

1244230313 is a deficient number, since it is larger than the sum of its proper divisors (11415067).

1244230313 is a wasteful number, since it uses less digits than its factorization.

1244230313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11415066.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1244230313 is about 35273.6489890116. The cubic root of 1244230313 is about 1075.5573999168.

Adding to 1244230313 its reverse (3130324421), we get a palindrome (4374554734).

The spelling of 1244230313 in words is "one billion, two hundred forty-four million, two hundred thirty thousand, three hundred thirteen".