108631840 has 24 divisors (see below), whose sum is σ = 256643100. Its totient is φ = 43452672.

The previous prime is 108631799. The next prime is 108631841. The reversal of 108631840 is 48136801.

It can be written as a sum of positive squares in 2 ways, for example, as 92083216 + 16548624 = 9596^2 + 4068^2 .

It is not an unprimeable number, because it can be changed into a prime (108631841) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 339315 + ... + 339634.

Almost surely, 2^108631840 is an apocalyptic number.

108631840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108631840 is an abundant number, since it is smaller than the sum of its proper divisors (148011260).

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

108631840 is an equidigital number, since it uses as much as digits as its factorization.

108631840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678964 (or 678956 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 108631840 is about 10422.6599292119. The cubic root of 108631840 is about 477.1471988049.

The spelling of 108631840 in words is "one hundred eight million, six hundred thirty-one thousand, eight hundred forty".