311120012011 has 2 divisors, whose sum is σ = 311120012012. Its totient is φ = 311120012010.

The previous prime is 311120012003. The next prime is 311120012017. The reversal of 311120012011 is 110210021113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311120012011 - 2³ = 311120012003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311120011982 and 311120012000.

It is not a weakly prime, because it can be changed into another prime (311120012017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155560006005 + 155560006006.

It is an arithmetic number, because the mean of its divisors is an integer number (155560006006).

Almost surely, 2^311120012011 is an apocalyptic number.

311120012011 is a deficient number, since it is larger than the sum of its proper divisors (1).

311120012011 is an equidigital number, since it uses as much as digits as its factorization.

311120012011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 311120012011 its reverse (110210021113), we get a palindrome (421330033124).

The spelling of 311120012011 in words is "three hundred eleven billion, one hundred twenty million, twelve thousand, eleven".