631009216 has 112 divisors (see below), whose sum is σ = 1353019392. Its totient is φ = 291456000.

The previous prime is 631009201. The next prime is 631009217. The reversal of 631009216 is 612900136.

631009216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631009217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6247566 + ... + 6247666.

Almost surely, 2^631009216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631009216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676509696).

631009216 is an abundant number, since it is smaller than the sum of its proper divisors (722010176).

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

631009216 is a wasteful number, since it uses less digits than its factorization.

631009216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 631009216 is about 25119.8968150747. The cubic root of 631009216 is about 857.7194019075.

The spelling of 631009216 in words is "six hundred thirty-one million, nine thousand, two hundred sixteen".