2321316691 has 2 divisors, whose sum is σ = 2321316692. Its totient is φ = 2321316690.

The previous prime is 2321316689. The next prime is 2321316703. The reversal of 2321316691 is 1966131232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2321316691 - 2¹ = 2321316689 is a prime.

It is a super-2 number, since 2×2321316691² = 10777022359830378962, which contains 22 as substring.

Together with 2321316689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2321316091) 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, 1160658345 + 1160658346.

It is an arithmetic number, because the mean of its divisors is an integer number (1160658346).

Almost surely, 2^2321316691 is an apocalyptic number.

2321316691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321316691 is an equidigital number, since it uses as much as digits as its factorization.

2321316691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 2321316691 is about 48180.0445309051. The cubic root of 2321316691 is about 1324.0715823923.

The spelling of 2321316691 in words is "two billion, three hundred twenty-one million, three hundred sixteen thousand, six hundred ninety-one".