631423080 has 128 divisors (see below), whose sum is σ = 2116454400. Its totient is φ = 167443200.

The previous prime is 631423033. The next prime is 631423087. The reversal of 631423080 is 80324136.

It is a happy number.

631423080 is a `hidden beast` number, since 631 + 4 + 23 + 0 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (631423087) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 204750 + ... + 207810.

It is an arithmetic number, because the mean of its divisors is an integer number (16534800).

Almost surely, 2^631423080 is an apocalyptic number.

631423080 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 631423080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058227200).

631423080 is an abundant number, since it is smaller than the sum of its proper divisors (1485031320).

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

631423080 is a wasteful number, since it uses less digits than its factorization.

631423080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272 (or 3262 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 631423080 is about 25128.1332374691. The cubic root of 631423080 is about 857.9068802064.

The spelling of 631423080 in words is "six hundred thirty-one million, four hundred twenty-three thousand, eighty".