631422330 has 192 divisors, whose sum is σ = 2037094272. Its totient is φ = 123432960.

The previous prime is 631422287. The next prime is 631422343. The reversal of 631422330 is 33224136.

It is a self number, because there is not a number n which added to its sum of digits gives 631422330.

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 95 ways as a sum of consecutive naturals, for example, 273742 + ... + 276038.

It is an arithmetic number, because the mean of its divisors is an integer number (10609866).

Almost surely, 2^631422330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631422330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018547136).

631422330 is an abundant number, since it is smaller than the sum of its proper divisors (1405671942).

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

631422330 is a wasteful number, since it uses less digits than its factorization.

631422330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349 (or 2342 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 631422330 is about 25128.1183139526. The cubic root of 631422330 is about 857.9065405343.

Adding to 631422330 its reverse (33224136), we get a palindrome (664646466).

The spelling of 631422330 in words is "six hundred thirty-one million, four hundred twenty-two thousand, three hundred thirty".