311220122303009 has 2 divisors, whose sum is σ = 311220122303010. Its totient is φ = 311220122303008.

The previous prime is 311220122302949. The next prime is 311220122303137. The reversal of 311220122303009 is 900303221022113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218738184040000 + 92481938263009 = 14789800^2 + 9616753^2 .

It is an emirp because it is prime and its reverse (900303221022113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311220122303009 is a prime.

It is not a weakly prime, because it can be changed into another prime (311220122303609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155610061151504 + 155610061151505.

It is an arithmetic number, because the mean of its divisors is an integer number (155610061151505).

Almost surely, 2^{311220122303009} is an apocalyptic number.

It is an amenable number.

311220122303009 is a deficient number, since it is larger than the sum of its proper divisors (1).

311220122303009 is an equidigital number, since it uses as much as digits as its factorization.

311220122303009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 311220122303009 in words is "three hundred eleven trillion, two hundred twenty billion, one hundred twenty-two million, three hundred three thousand, nine".