311343140089 has 2 divisors, whose sum is σ = 311343140090. Its totient is φ = 311343140088.

The previous prime is 311343140077. The next prime is 311343140161. The reversal of 311343140089 is 980041343113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198477378064 + 112865762025 = 445508^2 + 335955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311343140089 is a prime.

It is not a weakly prime, because it can be changed into another prime (311343144089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155671570044 + 155671570045.

It is an arithmetic number, because the mean of its divisors is an integer number (155671570045).

Almost surely, 2^311343140089 is an apocalyptic number.

It is an amenable number.

311343140089 is a deficient number, since it is larger than the sum of its proper divisors (1).

311343140089 is an equidigital number, since it uses as much as digits as its factorization.

311343140089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 311343140089 in words is "three hundred eleven billion, three hundred forty-three million, one hundred forty thousand, eighty-nine".