631308463 has 2 divisors, whose sum is σ = 631308464. Its totient is φ = 631308462.

The previous prime is 631308451. The next prime is 631308487. The reversal of 631308463 is 364803136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631308463 - 2²¹ = 629211311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631308443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315654231 + 315654232.

It is an arithmetic number, because the mean of its divisors is an integer number (315654232).

Almost surely, 2^631308463 is an apocalyptic number.

631308463 is a deficient number, since it is larger than the sum of its proper divisors (1).

631308463 is an equidigital number, since it uses as much as digits as its factorization.

631308463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 631308463 is about 25125.8524830502. The cubic root of 631308463 is about 857.8549674893.

The spelling of 631308463 in words is "six hundred thirty-one million, three hundred eight thousand, four hundred sixty-three".