631204460 has 48 divisors (see below), whose sum is σ = 1369968096. Its totient is φ = 244104192.

The previous prime is 631204447. The next prime is 631204477. The reversal of 631204460 is 64402136.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118004 + ... + 123236.

It is an arithmetic number, because the mean of its divisors is an integer number (28541002).

Almost surely, 2^631204460 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 631204460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684984048).

631204460 is an abundant number, since it is smaller than the sum of its proper divisors (738763636).

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

631204460 is a wasteful number, since it uses less digits than its factorization.

631204460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442 (or 5440 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 631204460 is about 25123.7827565835. The cubic root of 631204460 is about 857.8078566630.

Adding to 631204460 its reverse (64402136), we get a palindrome (695606596).

The spelling of 631204460 in words is "six hundred thirty-one million, two hundred four thousand, four hundred sixty".