1311224041 has 2 divisors, whose sum is σ = 1311224042. Its totient is φ = 1311224040.

The previous prime is 1311224039. The next prime is 1311224099. The reversal of 1311224041 is 1404221131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 870014016 + 441210025 = 29496^2 + 21005^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311224041 - 2¹ = 1311224039 is a prime.

Together with 1311224039, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1311224021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655612020 + 655612021.

It is an arithmetic number, because the mean of its divisors is an integer number (655612021).

Almost surely, 2^1311224041 is an apocalyptic number.

It is an amenable number.

1311224041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311224041 is an equidigital number, since it uses as much as digits as its factorization.

1311224041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1311224041 is about 36210.8276762628. The cubic root of 1311224041 is about 1094.5248707702.

Adding to 1311224041 its reverse (1404221131), we get a palindrome (2715445172).

The spelling of 1311224041 in words is "one billion, three hundred eleven million, two hundred twenty-four thousand, forty-one".