1311444223 has 2 divisors, whose sum is σ = 1311444224. Its totient is φ = 1311444222.

The previous prime is 1311444203. The next prime is 1311444227. The reversal of 1311444223 is 3224441131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311444223 - 2⁵ = 1311444191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311444227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655722111 + 655722112.

It is an arithmetic number, because the mean of its divisors is an integer number (655722112).

Almost surely, 2^1311444223 is an apocalyptic number.

1311444223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311444223 is an equidigital number, since it uses as much as digits as its factorization.

1311444223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 1311444223 is about 36213.8678271184. The cubic root of 1311444223 is about 1094.5861318971.

Adding to 1311444223 its reverse (3224441131), we get a palindrome (4535885354).

The spelling of 1311444223 in words is "one billion, three hundred eleven million, four hundred forty-four thousand, two hundred twenty-three".