311224431301111 has 2 divisors, whose sum is σ = 311224431301112. Its totient is φ = 311224431301110.

The previous prime is 311224431301081. The next prime is 311224431301129. The reversal of 311224431301111 is 111103134422113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311224431301111 - 2²¹ = 311224429203959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311224431301111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311224431301211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155612215650555 + 155612215650556.

It is an arithmetic number, because the mean of its divisors is an integer number (155612215650556).

Almost surely, 2^{311224431301111} is an apocalyptic number.

311224431301111 is a deficient number, since it is larger than the sum of its proper divisors (1).

311224431301111 is an equidigital number, since it uses as much as digits as its factorization.

311224431301111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 311224431301111 its reverse (111103134422113), we get a palindrome (422327565723224).

The spelling of 311224431301111 in words is "three hundred eleven trillion, two hundred twenty-four billion, four hundred thirty-one million, three hundred one thousand, one hundred eleven".