321112163 has 2 divisors, whose sum is σ = 321112164. Its totient is φ = 321112162.

The previous prime is 321112153. The next prime is 321112189. The reversal of 321112163 is 361211123.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321112163 is a prime.

It is a super-2 number, since 2×321112163² = 206226042453077138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321112153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160556081 + 160556082.

It is an arithmetic number, because the mean of its divisors is an integer number (160556082).

Almost surely, 2^321112163 is an apocalyptic number.

321112163 is a deficient number, since it is larger than the sum of its proper divisors (1).

321112163 is an equidigital number, since it uses as much as digits as its factorization.

321112163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 321112163 is about 17919.6027578738. The cubic root of 321112163 is about 684.7818674266.

Adding to 321112163 its reverse (361211123), we get a palindrome (682323286).

The spelling of 321112163 in words is "three hundred twenty-one million, one hundred twelve thousand, one hundred sixty-three".