631363536 has 30 divisors (see below), whose sum is σ = 1766941410. Its totient is φ = 210454464.

The previous prime is 631363531. The next prime is 631363571. The reversal of 631363536 is 635363136.

631363536 is a `hidden beast` number, since 6 + 3 + 13 + 635 + 3 + 6 = 666.

631363536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 627201936 + 4161600 = 25044^2 + 2040^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 631363536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631363531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2192091 + ... + 2192378.

It is an arithmetic number, because the mean of its divisors is an integer number (58898047).

Almost surely, 2^631363536 is an apocalyptic number.

It is an amenable number.

631363536 is an abundant number, since it is smaller than the sum of its proper divisors (1135577874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631363536 is a wasteful number, since it uses less digits than its factorization.

631363536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384483 (or 4384474 counting only the distinct ones).

The product of its digits is 87480, while the sum is 36.

The square root of 631363536 is about 25126.9484020643. The cubic root of 631363536 is about 857.8799121219.

The spelling of 631363536 in words is "six hundred thirty-one million, three hundred sixty-three thousand, five hundred thirty-six".