311021103011 has 2 divisors, whose sum is σ = 311021103012. Its totient is φ = 311021103010.

The previous prime is 311021103007. The next prime is 311021103013. The reversal of 311021103011 is 110301120113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311021103011 - 2² = 311021103007 is a prime.

It is a super-2 number, since 2×311021103011² (a number of 24 digits) contains 22 as substring.

Together with 311021103013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (311021103013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155510551505 + 155510551506.

It is an arithmetic number, because the mean of its divisors is an integer number (155510551506).

Almost surely, 2^311021103011 is an apocalyptic number.

311021103011 is a deficient number, since it is larger than the sum of its proper divisors (1).

311021103011 is an equidigital number, since it uses as much as digits as its factorization.

311021103011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 311021103011 its reverse (110301120113), we get a palindrome (421322223124).

The spelling of 311021103011 in words is "three hundred eleven billion, twenty-one million, one hundred three thousand, eleven".