631223894016 has 135 divisors (see below), whose sum is σ = 1824361803901. Its totient is φ = 210306269184.

The previous prime is 631223893969. The next prime is 631223894087. The reversal of 631223894016 is 610498322136.

The square root of 631223894016 is 794496.

It is a perfect power (a square), and thus also a powerful number.

631223894016 is a `hidden beast` number, since 6 + 3 + 1 + 2 + 238 + 9 + 401 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 98907734016 + 532316160000 = 314496^2 + 729600^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 305085430 + ... + 305087498.

Almost surely, 2^631223894016 is an apocalyptic number.

631223894016 is the 794496-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631223894016

631223894016 is an abundant number, since it is smaller than the sum of its proper divisors (1193137909885).

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

631223894016 is an frugal number, since it uses more digits than its factorization.

631223894016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172 (or 2074 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 631223894016 in words is "six hundred thirty-one billion, two hundred twenty-three million, eight hundred ninety-four thousand, sixteen".