311223000163 has 2 divisors, whose sum is σ = 311223000164. Its totient is φ = 311223000162.

The previous prime is 311223000161. The next prime is 311223000191. The reversal of 311223000163 is 361000322113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311223000163 - 2¹ = 311223000161 is a prime.

Together with 311223000161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (311223000161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155611500081 + 155611500082.

It is an arithmetic number, because the mean of its divisors is an integer number (155611500082).

Almost surely, 2^311223000163 is an apocalyptic number.

311223000163 is a deficient number, since it is larger than the sum of its proper divisors (1).

311223000163 is an equidigital number, since it uses as much as digits as its factorization.

311223000163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 311223000163 its reverse (361000322113), we get a palindrome (672223322276).

The spelling of 311223000163 in words is "three hundred eleven billion, two hundred twenty-three million, one hundred sixty-three", and thus it is an aban number.