311120010511 has 2 divisors, whose sum is σ = 311120010512. Its totient is φ = 311120010510.

The previous prime is 311120010493. The next prime is 311120010557. The reversal of 311120010511 is 115010021113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311120010511 is a prime.

It is a super-2 number, since 2×311120010511² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311120013511) 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, 155560005255 + 155560005256.

It is an arithmetic number, because the mean of its divisors is an integer number (155560005256).

Almost surely, 2^311120010511 is an apocalyptic number.

311120010511 is a deficient number, since it is larger than the sum of its proper divisors (1).

311120010511 is an equidigital number, since it uses as much as digits as its factorization.

311120010511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 16.

Adding to 311120010511 its reverse (115010021113), we get a palindrome (426130031624).

The spelling of 311120010511 in words is "three hundred eleven billion, one hundred twenty million, ten thousand, five hundred eleven".