1316781383 has 2 divisors, whose sum is σ = 1316781384. Its totient is φ = 1316781382.

The previous prime is 1316781353. The next prime is 1316781397. The reversal of 1316781383 is 3831876131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1316781383 - 2²⁰ = 1315732807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1316781383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316781353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658390691 + 658390692.

It is an arithmetic number, because the mean of its divisors is an integer number (658390692).

Almost surely, 2^1316781383 is an apocalyptic number.

1316781383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316781383 is an equidigital number, since it uses as much as digits as its factorization.

1316781383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 1316781383 is about 36287.4824560757. The cubic root of 1316781383 is about 1096.0689943491.

The spelling of 1316781383 in words is "one billion, three hundred sixteen million, seven hundred eighty-one thousand, three hundred eighty-three".