8016312191 has 2 divisors, whose sum is σ = 8016312192. Its totient is φ = 8016312190.

The previous prime is 8016312181. The next prime is 8016312203. The reversal of 8016312191 is 1912136108.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8016312191 - 2²² = 8012117887 is a prime.

It is a super-2 number, since 2×8016312191² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8016312181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4008156095 + 4008156096.

It is an arithmetic number, because the mean of its divisors is an integer number (4008156096).

Almost surely, 2^8016312191 is an apocalyptic number.

8016312191 is a deficient number, since it is larger than the sum of its proper divisors (1).

8016312191 is an equidigital number, since it uses as much as digits as its factorization.

8016312191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 8016312191 is about 89533.8605835803. The cubic root of 8016312191 is about 2001.3584263800.

Adding to 8016312191 its reverse (1912136108), we get a palindrome (9928448299).

The spelling of 8016312191 in words is "eight billion, sixteen million, three hundred twelve thousand, one hundred ninety-one".