631402963 has 2 divisors, whose sum is σ = 631402964. Its totient is φ = 631402962.

The previous prime is 631402957. The next prime is 631402991. The reversal of 631402963 is 369204136.

It is a happy number.

631402963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631402963 is a prime.

It is not a weakly prime, because it can be changed into another prime (631402943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315701481 + 315701482.

It is an arithmetic number, because the mean of its divisors is an integer number (315701482).

Almost surely, 2^631402963 is an apocalyptic number.

631402963 is a deficient number, since it is larger than the sum of its proper divisors (1).

631402963 is an equidigital number, since it uses as much as digits as its factorization.

631402963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 631402963 is about 25127.7329458907. The cubic root of 631402963 is about 857.8977692017.

The spelling of 631402963 in words is "six hundred thirty-one million, four hundred two thousand, nine hundred sixty-three".