631513104163 has 2 divisors, whose sum is σ = 631513104164. Its totient is φ = 631513104162.

The previous prime is 631513104139. The next prime is 631513104191. The reversal of 631513104163 is 361401315136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631513104163 - 2³³ = 622923169571 is a prime.

It is not a weakly prime, because it can be changed into another prime (631513104263) 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, 315756552081 + 315756552082.

It is an arithmetic number, because the mean of its divisors is an integer number (315756552082).

Almost surely, 2^631513104163 is an apocalyptic number.

631513104163 is a deficient number, since it is larger than the sum of its proper divisors (1).

631513104163 is an equidigital number, since it uses as much as digits as its factorization.

631513104163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

Adding to 631513104163 its reverse (361401315136), we get a palindrome (992914419299).

The spelling of 631513104163 in words is "six hundred thirty-one billion, five hundred thirteen million, one hundred four thousand, one hundred sixty-three".