1313238727 has 2 divisors, whose sum is σ = 1313238728. Its totient is φ = 1313238726.

The previous prime is 1313238721. The next prime is 1313238769. The reversal of 1313238727 is 7278323131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313238727 - 2¹⁹ = 1312714439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313238721) 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, 656619363 + 656619364.

It is an arithmetic number, because the mean of its divisors is an integer number (656619364).

Almost surely, 2^1313238727 is an apocalyptic number.

1313238727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313238727 is an equidigital number, since it uses as much as digits as its factorization.

1313238727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 1313238727 is about 36238.6358324924. The cubic root of 1313238727 is about 1095.0851603527.

The spelling of 1313238727 in words is "one billion, three hundred thirteen million, two hundred thirty-eight thousand, seven hundred twenty-seven".