311103123011 has 2 divisors, whose sum is σ = 311103123012. Its totient is φ = 311103123010.

The previous prime is 311103122969. The next prime is 311103123031. The reversal of 311103123011 is 110321301113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311103123011 is a prime.

It is a super-2 number, since 2×311103123011² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311103123031) 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, 155551561505 + 155551561506.

It is an arithmetic number, because the mean of its divisors is an integer number (155551561506).

Almost surely, 2^311103123011 is an apocalyptic number.

311103123011 is a deficient number, since it is larger than the sum of its proper divisors (1).

311103123011 is an equidigital number, since it uses as much as digits as its factorization.

311103123011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 311103123011 its reverse (110321301113), we get a palindrome (421424424124).

The spelling of 311103123011 in words is "three hundred eleven billion, one hundred three million, one hundred twenty-three thousand, eleven".