631545463 has 2 divisors, whose sum is σ = 631545464. Its totient is φ = 631545462.

The previous prime is 631545451. The next prime is 631545487. The reversal of 631545463 is 364545136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631545463 - 2²¹ = 629448311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631545413) 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, 315772731 + 315772732.

It is an arithmetic number, because the mean of its divisors is an integer number (315772732).

Almost surely, 2^631545463 is an apocalyptic number.

631545463 is a deficient number, since it is larger than the sum of its proper divisors (1).

631545463 is an equidigital number, since it uses as much as digits as its factorization.

631545463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 37.

The square root of 631545463 is about 25130.5682983891. The cubic root of 631545463 is about 857.9623033918.

The spelling of 631545463 in words is "six hundred thirty-one million, five hundred forty-five thousand, four hundred sixty-three".