311690000689 has 2 divisors, whose sum is σ = 311690000690. Its totient is φ = 311690000688.

The previous prime is 311690000683. The next prime is 311690000707. The reversal of 311690000689 is 986000096113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309875922225 + 1814078464 = 556665^2 + 42592^2 .

It is an emirp because it is prime and its reverse (986000096113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311690000689 - 2⁹ = 311690000177 is a prime.

It is not a weakly prime, because it can be changed into another prime (311690000683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155845000344 + 155845000345.

It is an arithmetic number, because the mean of its divisors is an integer number (155845000345).

Almost surely, 2^311690000689 is an apocalyptic number.

It is an amenable number.

311690000689 is a deficient number, since it is larger than the sum of its proper divisors (1).

311690000689 is an equidigital number, since it uses as much as digits as its factorization.

311690000689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 311690000689 in words is "three hundred eleven billion, six hundred ninety million, six hundred eighty-nine", and thus it is an aban number.