1311242353 has 2 divisors, whose sum is σ = 1311242354. Its totient is φ = 1311242352.

The previous prime is 1311242341. The next prime is 1311242363. The reversal of 1311242353 is 3532421131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896223969 + 415018384 = 29937^2 + 20372^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311242353 - 2²⁹ = 774371441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311242333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655621176 + 655621177.

It is an arithmetic number, because the mean of its divisors is an integer number (655621177).

Almost surely, 2^1311242353 is an apocalyptic number.

It is an amenable number.

1311242353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311242353 is an equidigital number, since it uses as much as digits as its factorization.

1311242353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 1311242353 is about 36211.0805279268. The cubic root of 1311242353 is about 1094.5299659702.

Adding to 1311242353 its reverse (3532421131), we get a palindrome (4843663484).

The spelling of 1311242353 in words is "one billion, three hundred eleven million, two hundred forty-two thousand, three hundred fifty-three".