631400000 has 336 divisors, whose sum is σ = 2000121984. Its totient is φ = 192000000.

The previous prime is 631399973. The next prime is 631400017. The reversal of 631400000 is 4136.

It is a Harshad number since it is a multiple of its sum of digits (14).

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 47 ways as a sum of consecutive naturals, for example, 15399980 + ... + 15400020.

It is an arithmetic number, because the mean of its divisors is an integer number (5952744).

Almost surely, 2^631400000 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 631400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000060992).

631400000 is an abundant number, since it is smaller than the sum of its proper divisors (1368721984).

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

631400000 is an equidigital number, since it uses as much as digits as its factorization.

631400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 631400000 is about 25127.6739870606. The cubic root of 631400000 is about 857.8964272404.

Adding to 631400000 its reverse (4136), we get a palindrome (631404136).

The spelling of 631400000 in words is "six hundred thirty-one million, four hundred thousand".