311333121223 has 2 divisors, whose sum is σ = 311333121224. Its totient is φ = 311333121222.

The previous prime is 311333121181. The next prime is 311333121247. The reversal of 311333121223 is 322121333113.

It is a strong prime.

It is an emirp because it is prime and its reverse (322121333113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311333121223 - 2¹³ = 311333113031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311333121293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155666560611 + 155666560612.

It is an arithmetic number, because the mean of its divisors is an integer number (155666560612).

Almost surely, 2^311333121223 is an apocalyptic number.

311333121223 is a deficient number, since it is larger than the sum of its proper divisors (1).

311333121223 is an equidigital number, since it uses as much as digits as its factorization.

311333121223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 25.

Adding to 311333121223 its reverse (322121333113), we get a palindrome (633454454336).

The spelling of 311333121223 in words is "three hundred eleven billion, three hundred thirty-three million, one hundred twenty-one thousand, two hundred twenty-three".