2321319691 has 2 divisors, whose sum is σ = 2321319692. Its totient is φ = 2321319690.

The previous prime is 2321319683. The next prime is 2321319713. The reversal of 2321319691 is 1969131232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2321319691 - 2³ = 2321319683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2321319691.

It is not a weakly prime, because it can be changed into another prime (2321316691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160659845 + 1160659846.

It is an arithmetic number, because the mean of its divisors is an integer number (1160659846).

Almost surely, 2^2321319691 is an apocalyptic number.

2321319691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321319691 is an equidigital number, since it uses as much as digits as its factorization.

2321319691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The square root of 2321319691 is about 48180.0756641166. The cubic root of 2321319691 is about 1324.0721527888.

The spelling of 2321319691 in words is "two billion, three hundred twenty-one million, three hundred nineteen thousand, six hundred ninety-one".