1244113313 has 2 divisors, whose sum is σ = 1244113314. Its totient is φ = 1244113312.

The previous prime is 1244113301. The next prime is 1244113349. The reversal of 1244113313 is 3133114421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1026049024 + 218064289 = 32032^2 + 14767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244113313 - 2⁶ = 1244113249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244113393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622056656 + 622056657.

It is an arithmetic number, because the mean of its divisors is an integer number (622056657).

Almost surely, 2^1244113313 is an apocalyptic number.

It is an amenable number.

1244113313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244113313 is an equidigital number, since it uses as much as digits as its factorization.

1244113313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 1244113313 is about 35271.9904882047. The cubic root of 1244113313 is about 1075.5236858584.

Adding to 1244113313 its reverse (3133114421), we get a palindrome (4377227734).

The spelling of 1244113313 in words is "one billion, two hundred forty-four million, one hundred thirteen thousand, three hundred thirteen".