1312242311 has 2 divisors, whose sum is σ = 1312242312. Its totient is φ = 1312242310.

The previous prime is 1312242301. The next prime is 1312242313. The reversal of 1312242311 is 1132422131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312242311 - 2³⁰ = 238500487 is a prime.

Together with 1312242313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312242313) 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, 656121155 + 656121156.

It is an arithmetic number, because the mean of its divisors is an integer number (656121156).

Almost surely, 2^1312242311 is an apocalyptic number.

1312242311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312242311 is an equidigital number, since it uses as much as digits as its factorization.

1312242311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 1312242311 is about 36224.8852448148. The cubic root of 1312242311 is about 1094.8081260657.

Adding to 1312242311 its reverse (1132422131), we get a palindrome (2444664442).

The spelling of 1312242311 in words is "one billion, three hundred twelve million, two hundred forty-two thousand, three hundred eleven".