31023210012163 has 2 divisors, whose sum is σ = 31023210012164. Its totient is φ = 31023210012162.

The previous prime is 31023210012097. The next prime is 31023210012173. The reversal of 31023210012163 is 36121001232013.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (36121001232013) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31023210012163 is a prime.

It is not a weakly prime, because it can be changed into another prime (31023210012173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511605006081 + 15511605006082.

It is an arithmetic number, because the mean of its divisors is an integer number (15511605006082).

Almost surely, 2^{31023210012163} is an apocalyptic number.

31023210012163 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023210012163 is an equidigital number, since it uses as much as digits as its factorization.

31023210012163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31023210012163 its reverse (36121001232013), we get a palindrome (67144211244176).

The spelling of 31023210012163 in words is "thirty-one trillion, twenty-three billion, two hundred ten million, twelve thousand, one hundred sixty-three".