1244321311 has 2 divisors, whose sum is σ = 1244321312. Its totient is φ = 1244321310.

The previous prime is 1244321303. The next prime is 1244321317. The reversal of 1244321311 is 1131234421.

It is a strong prime.

It is an emirp because it is prime and its reverse (1131234421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244321311 - 2³ = 1244321303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244321317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622160655 + 622160656.

It is an arithmetic number, because the mean of its divisors is an integer number (622160656).

Almost surely, 2^1244321311 is an apocalyptic number.

1244321311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244321311 is an equidigital number, since it uses as much as digits as its factorization.

1244321311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 1244321311 is about 35274.9388518251. The cubic root of 1244321311 is about 1075.5836199248.

Adding to 1244321311 its reverse (1131234421), we get a palindrome (2375555732).

The spelling of 1244321311 in words is "one billion, two hundred forty-four million, three hundred twenty-one thousand, three hundred eleven".