311200355111 has 2 divisors, whose sum is σ = 311200355112. Its totient is φ = 311200355110.

The previous prime is 311200355101. The next prime is 311200355153. The reversal of 311200355111 is 111553002113.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311200355111 is a prime.

It is a super-2 number, since 2×311200355111² (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 (311200355101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155600177555 + 155600177556.

It is an arithmetic number, because the mean of its divisors is an integer number (155600177556).

Almost surely, 2^311200355111 is an apocalyptic number.

311200355111 is a deficient number, since it is larger than the sum of its proper divisors (1).

311200355111 is an equidigital number, since it uses as much as digits as its factorization.

311200355111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 23.

Adding to 311200355111 its reverse (111553002113), we get a palindrome (422753357224).

The spelling of 311200355111 in words is "three hundred eleven billion, two hundred million, three hundred fifty-five thousand, one hundred eleven".