631078912 has 32 divisors (see below), whose sum is σ = 1262204100. Its totient is φ = 315523072.

The previous prime is 631078909. The next prime is 631078933. The reversal of 631078912 is 219870136.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×631078912² = 796521186342207488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23139 + ... + 42397.

Almost surely, 2^631078912 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 631078912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631102050).

631078912 is an abundant number, since it is smaller than the sum of its proper divisors (631125188).

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

631078912 is an frugal number, since it uses more digits than its factorization.

631078912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19289 (or 19261 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 631078912 is about 25121.2840436153. The cubic root of 631078912 is about 857.7509795819.

The spelling of 631078912 in words is "six hundred thirty-one million, seventy-eight thousand, nine hundred twelve".