31330231132163 has 2 divisors, whose sum is σ = 31330231132164. Its totient is φ = 31330231132162.

The previous prime is 31330231132159. The next prime is 31330231132237. The reversal of 31330231132163 is 36123113203313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31330231132163 - 2² = 31330231132159 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31330231135163) 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, 15665115566081 + 15665115566082.

It is an arithmetic number, because the mean of its divisors is an integer number (15665115566082).

Almost surely, 2^{31330231132163} is an apocalyptic number.

31330231132163 is a deficient number, since it is larger than the sum of its proper divisors (1).

31330231132163 is an equidigital number, since it uses as much as digits as its factorization.

31330231132163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 32.

Adding to 31330231132163 its reverse (36123113203313), we get a palindrome (67453344335476).

The spelling of 31330231132163 in words is "thirty-one trillion, three hundred thirty billion, two hundred thirty-one million, one hundred thirty-two thousand, one hundred sixty-three".