631875316285 has 4 divisors (see below), whose sum is σ = 758250379548. Its totient is φ = 505500253024.

The previous prime is 631875316283. The next prime is 631875316309. The reversal of 631875316285 is 582613578136.

631875316285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 357062417209 + 274812899076 = 597547^2 + 524226^2 .

It is a cyclic number.

It is not a de Polignac number, because 631875316285 - 2¹ = 631875316283 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 (631875316283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63187531624 + ... + 63187531633.

It is an arithmetic number, because the mean of its divisors is an integer number (189562594887).

Almost surely, 2^631875316285 is an apocalyptic number.

It is an amenable number.

631875316285 is a deficient number, since it is larger than the sum of its proper divisors (126375063263).

631875316285 is a wasteful number, since it uses less digits than its factorization.

631875316285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126375063262.

The product of its digits is 7257600, while the sum is 55.

The spelling of 631875316285 in words is "six hundred thirty-one billion, eight hundred seventy-five million, three hundred sixteen thousand, two hundred eighty-five".