631316863 has 8 divisors (see below), whose sum is σ = 653366880. Its totient is φ = 609285600.

The previous prime is 631316839. The next prime is 631316869. The reversal of 631316863 is 368613136.

631316863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 631316863 - 2²⁹ = 94445951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631316869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125038 + ... + 129988.

It is an arithmetic number, because the mean of its divisors is an integer number (81670860).

Almost surely, 2^631316863 is an apocalyptic number.

631316863 is a deficient number, since it is larger than the sum of its proper divisors (22050017).

631316863 is a wasteful number, since it uses less digits than its factorization.

631316863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9377.

The product of its digits is 46656, while the sum is 37.

The square root of 631316863 is about 25126.0196410016. The cubic root of 631316863 is about 857.8587722589.

Adding to 631316863 its reverse (368613136), we get a palindrome (999929999).

The spelling of 631316863 in words is "six hundred thirty-one million, three hundred sixteen thousand, eight hundred sixty-three".