31223310163 has 2 divisors, whose sum is σ = 31223310164. Its totient is φ = 31223310162.

The previous prime is 31223310119. The next prime is 31223310269. The reversal of 31223310163 is 36101332213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31223310163 is a prime.

It is not a weakly prime, because it can be changed into another prime (31223310463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611655081 + 15611655082.

It is an arithmetic number, because the mean of its divisors is an integer number (15611655082).

Almost surely, 2^31223310163 is an apocalyptic number.

31223310163 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223310163 is an equidigital number, since it uses as much as digits as its factorization.

31223310163 is an odious number, because the sum of its binary digits is odd.

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

Adding to 31223310163 its reverse (36101332213), we get a palindrome (67324642376).

The spelling of 31223310163 in words is "thirty-one billion, two hundred twenty-three million, three hundred ten thousand, one hundred sixty-three".