631012080 has 80 divisors (see below), whose sum is σ = 1989336960. Its totient is φ = 165414144.

The previous prime is 631012013. The next prime is 631012091. The reversal of 631012080 is 80210136.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8122 + ... + 36441.

It is an arithmetic number, because the mean of its divisors is an integer number (24866712).

Almost surely, 2^631012080 is an apocalyptic number.

631012080 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 631012080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994668480).

631012080 is an abundant number, since it is smaller than the sum of its proper divisors (1358324880).

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

631012080 is a wasteful number, since it uses less digits than its factorization.

631012080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44638 (or 44632 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 631012080 is about 25119.9538216136. The cubic root of 631012080 is about 857.7206995666.

The spelling of 631012080 in words is "six hundred thirty-one million, twelve thousand, eighty".