311322213011 has 2 divisors, whose sum is σ = 311322213012. Its totient is φ = 311322213010.

The previous prime is 311322212983. The next prime is 311322213019. The reversal of 311322213011 is 110312223113.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (110312223113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311322213011 - 2²² = 311318018707 is a prime.

It is a super-2 number, since 2×311322213011² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311322213019) 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, 155661106505 + 155661106506.

It is an arithmetic number, because the mean of its divisors is an integer number (155661106506).

Almost surely, 2^311322213011 is an apocalyptic number.

311322213011 is a deficient number, since it is larger than the sum of its proper divisors (1).

311322213011 is an equidigital number, since it uses as much as digits as its factorization.

311322213011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311322213011 its reverse (110312223113), we get a palindrome (421634436124).

The spelling of 311322213011 in words is "three hundred eleven billion, three hundred twenty-two million, two hundred thirteen thousand, eleven".