631395463 has 2 divisors, whose sum is σ = 631395464. Its totient is φ = 631395462.

The previous prime is 631395451. The next prime is 631395467. The reversal of 631395463 is 364593136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631395463 - 2¹⁷ = 631264391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631395467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315697731 + 315697732.

It is an arithmetic number, because the mean of its divisors is an integer number (315697732).

Almost surely, 2^631395463 is an apocalyptic number.

631395463 is a deficient number, since it is larger than the sum of its proper divisors (1).

631395463 is an equidigital number, since it uses as much as digits as its factorization.

631395463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 40.

The square root of 631395463 is about 25127.5837079493. The cubic root of 631395463 is about 857.8943723964.

The spelling of 631395463 in words is "six hundred thirty-one million, three hundred ninety-five thousand, four hundred sixty-three".