1311689783 has 2 divisors, whose sum is σ = 1311689784. Its totient is φ = 1311689782.

The previous prime is 1311689777. The next prime is 1311689789. The reversal of 1311689783 is 3879861131.

It is a balanced prime because it is at equal distance from previous prime (1311689777) and next prime (1311689789).

It is a cyclic number.

It is not a de Polignac number, because 1311689783 - 2⁴ = 1311689767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311689789) 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, 655844891 + 655844892.

It is an arithmetic number, because the mean of its divisors is an integer number (655844892).

Almost surely, 2^1311689783 is an apocalyptic number.

1311689783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311689783 is an equidigital number, since it uses as much as digits as its factorization.

1311689783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The square root of 1311689783 is about 36217.2580823010. The cubic root of 1311689783 is about 1094.6544458448.

The spelling of 1311689783 in words is "one billion, three hundred eleven million, six hundred eighty-nine thousand, seven hundred eighty-three".