631117208152 has 24 divisors (see below), whose sum is σ = 1257047904060. Its totient is φ = 296996332160.

The previous prime is 631117208123. The next prime is 631117208159. The reversal of 631117208152 is 251802711136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631117208159) 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 in 5 ways as a sum of consecutive naturals, for example, 136484974 + ... + 136489597.

Almost surely, 2^631117208152 is an apocalyptic number.

It is an amenable number.

631117208152 is a deficient number, since it is larger than the sum of its proper divisors (625930695908).

631117208152 is a wasteful number, since it uses less digits than its factorization.

631117208152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272974611 (or 272974590 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

Adding to 631117208152 its reverse (251802711136), we get a palindrome (882919919288).

The spelling of 631117208152 in words is "six hundred thirty-one billion, one hundred seventeen million, two hundred eight thousand, one hundred fifty-two".