1311324229 has 2 divisors, whose sum is σ = 1311324230. Its totient is φ = 1311324228.

The previous prime is 1311324199. The next prime is 1311324281. The reversal of 1311324229 is 9224231131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1198752129 + 112572100 = 34623^2 + 10610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311324229 - 2¹⁷ = 1311193157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311324197 and 1311324206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311321229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655662114 + 655662115.

It is an arithmetic number, because the mean of its divisors is an integer number (655662115).

Almost surely, 2^1311324229 is an apocalyptic number.

It is an amenable number.

1311324229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311324229 is an equidigital number, since it uses as much as digits as its factorization.

1311324229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 1311324229 is about 36212.2110482086. The cubic root of 1311324229 is about 1094.5527468772.

The spelling of 1311324229 in words is "one billion, three hundred eleven million, three hundred twenty-four thousand, two hundred twenty-nine".