631147080 has 64 divisors (see below), whose sum is σ = 1899181440. Its totient is φ = 167795712.

The previous prime is 631147079. The next prime is 631147093. The reversal of 631147080 is 80741136.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32637 + ... + 48243.

It is an arithmetic number, because the mean of its divisors is an integer number (29674710).

Almost surely, 2^631147080 is an apocalyptic number.

631147080 is a gapful number since it is divisible by the number (60) 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 631147080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949590720).

631147080 is an abundant number, since it is smaller than the sum of its proper divisors (1268034360).

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

631147080 is a wasteful number, since it uses less digits than its factorization.

631147080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15958 (or 15954 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 631147080 is about 25122.6407847583. The cubic root of 631147080 is about 857.7818627052.

The spelling of 631147080 in words is "six hundred thirty-one million, one hundred forty-seven thousand, eighty".