631620263063 has 2 divisors, whose sum is σ = 631620263064. Its totient is φ = 631620263062.

The previous prime is 631620263051. The next prime is 631620263089. The reversal of 631620263063 is 360362026136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631620263063 - 2¹⁴ = 631620246679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631620268063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315810131531 + 315810131532.

It is an arithmetic number, because the mean of its divisors is an integer number (315810131532).

Almost surely, 2^631620263063 is an apocalyptic number.

631620263063 is a deficient number, since it is larger than the sum of its proper divisors (1).

631620263063 is an equidigital number, since it uses as much as digits as its factorization.

631620263063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 38.

Adding to 631620263063 its reverse (360362026136), we get a palindrome (991982289199).

The spelling of 631620263063 in words is "six hundred thirty-one billion, six hundred twenty million, two hundred sixty-three thousand, sixty-three".