631395232 has 192 divisors, whose sum is σ = 1544417280. Its totient is φ = 250822656.

The previous prime is 631395223. The next prime is 631395257. The reversal of 631395232 is 232593136.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4971553 + ... + 4971679.

It is an arithmetic number, because the mean of its divisors is an integer number (8043840).

Almost surely, 2^631395232 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 631395232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (772208640).

631395232 is an abundant number, since it is smaller than the sum of its proper divisors (913022048).

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

631395232 is a wasteful number, since it uses less digits than its factorization.

631395232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 215 counting only the distinct ones).

The product of its digits is 29160, while the sum is 34.

The square root of 631395232 is about 25127.5791114067. The cubic root of 631395232 is about 857.8942677744.

The spelling of 631395232 in words is "six hundred thirty-one million, three hundred ninety-five thousand, two hundred thirty-two".