634143312 has 120 divisors (see below), whose sum is σ = 1968097248. Its totient is φ = 188985600.

The previous prime is 634143283. The next prime is 634143329. The reversal of 634143312 is 213341436.

634143312 is a `hidden beast` number, since 6 + 341 + 4 + 3 + 312 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93343 + ... + 99905.

Almost surely, 2^634143312 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 634143312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984048624).

634143312 is an abundant number, since it is smaller than the sum of its proper divisors (1333953936).

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

634143312 is a wasteful number, since it uses less digits than its factorization.

634143312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6649 (or 6640 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 634143312 is about 25182.2022865356. The cubic root of 634143312 is about 859.1370973373.

Adding to 634143312 its reverse (213341436), we get a palindrome (847484748).

The spelling of 634143312 in words is "six hundred thirty-four million, one hundred forty-three thousand, three hundred twelve".