6311065391 has 2 divisors, whose sum is σ = 6311065392. Its totient is φ = 6311065390.

The previous prime is 6311065379. The next prime is 6311065393. The reversal of 6311065391 is 1935601136.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6311065391 is a prime.

Together with 6311065393, 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 (6311065393) 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, 3155532695 + 3155532696.

It is an arithmetic number, because the mean of its divisors is an integer number (3155532696).

Almost surely, 2^6311065391 is an apocalyptic number.

6311065391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6311065391 is an equidigital number, since it uses as much as digits as its factorization.

6311065391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 6311065391 is about 79442.2141622450. The cubic root of 6311065391 is about 1847.9954319482.

The spelling of 6311065391 in words is "six billion, three hundred eleven million, sixty-five thousand, three hundred ninety-one".