631325376 has 168 divisors, whose sum is σ = 2028194064. Its totient is φ = 186071040.

The previous prime is 631325341. The next prime is 631325377. The reversal of 631325376 is 673523136.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 631325376.

It is not an unprimeable number, because it can be changed into a prime (631325377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233086 + ... + 235778.

Almost surely, 2^631325376 is an apocalyptic number.

631325376 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631325376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014097032).

631325376 is an abundant number, since it is smaller than the sum of its proper divisors (1396868688).

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

631325376 is a wasteful number, since it uses less digits than its factorization.

631325376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2746 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 631325376 is about 25126.1890464909. The cubic root of 631325376 is about 857.8626281773.

The spelling of 631325376 in words is "six hundred thirty-one million, three hundred twenty-five thousand, three hundred seventy-six".