311322213073 has 2 divisors, whose sum is σ = 311322213074. Its totient is φ = 311322213072.

The previous prime is 311322213019. The next prime is 311322213077. The reversal of 311322213073 is 370312223113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200714752144 + 110607460929 = 448012^2 + 332577^2 .

It is a cyclic number.

It is not a de Polignac number, because 311322213073 - 2¹³ = 311322204881 is a prime.

It is not a weakly prime, because it can be changed into another prime (311322213077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155661106536 + 155661106537.

It is an arithmetic number, because the mean of its divisors is an integer number (155661106537).

Almost surely, 2^311322213073 is an apocalyptic number.

It is an amenable number.

311322213073 is a deficient number, since it is larger than the sum of its proper divisors (1).

311322213073 is an equidigital number, since it uses as much as digits as its factorization.

311322213073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 311322213073 its reverse (370312223113), we get a palindrome (681634436186).

The spelling of 311322213073 in words is "three hundred eleven billion, three hundred twenty-two million, two hundred thirteen thousand, seventy-three".