1311442427 has 2 divisors, whose sum is σ = 1311442428. Its totient is φ = 1311442426.

The previous prime is 1311442409. The next prime is 1311442463. The reversal of 1311442427 is 7242441131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311442427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311442427.

It is not a weakly prime, because it can be changed into another prime (1311447427) 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, 655721213 + 655721214.

It is an arithmetic number, because the mean of its divisors is an integer number (655721214).

Almost surely, 2^1311442427 is an apocalyptic number.

1311442427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311442427 is an equidigital number, since it uses as much as digits as its factorization.

1311442427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

The square root of 1311442427 is about 36213.8430299796. The cubic root of 1311442427 is about 1094.5856322247.

Adding to 1311442427 its reverse (7242441131), we get a palindrome (8553883558).

The spelling of 1311442427 in words is "one billion, three hundred eleven million, four hundred forty-two thousand, four hundred twenty-seven".