631006063 has 2 divisors, whose sum is σ = 631006064. Its totient is φ = 631006062.

The previous prime is 631006009. The next prime is 631006091. The reversal of 631006063 is 360600136.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631006063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631006163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315503031 + 315503032.

It is an arithmetic number, because the mean of its divisors is an integer number (315503032).

Almost surely, 2^631006063 is an apocalyptic number.

631006063 is a deficient number, since it is larger than the sum of its proper divisors (1).

631006063 is an equidigital number, since it uses as much as digits as its factorization.

631006063 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.

The square root of 631006063 is about 25119.8340559805. The cubic root of 631006063 is about 857.7179732998.

Adding to 631006063 its reverse (360600136), we get a palindrome (991606199).

The spelling of 631006063 in words is "six hundred thirty-one million, six thousand, sixty-three".