631479384036 has 36 divisors (see below), whose sum is σ = 1635172229964. Its totient is φ = 205359148800.

The previous prime is 631479383999. The next prime is 631479384047. The reversal of 631479384036 is 630483974136.

It is a happy number.

631479384036 is a `hidden beast` number, since 6 + 3 + 147 + 93 + 8 + 403 + 6 = 666.

631479384036 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 207279878400 + 424199505636 = 455280^2 + 651306^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213914305 + ... + 213917256.

Almost surely, 2^631479384036 is an apocalyptic number.

It is an amenable number.

631479384036 is an abundant number, since it is smaller than the sum of its proper divisors (1003692845928).

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

631479384036 is a wasteful number, since it uses less digits than its factorization.

631479384036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427831612 (or 427831607 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 631479384036 in words is "six hundred thirty-one billion, four hundred seventy-nine million, three hundred eighty-four thousand, thirty-six".