120831808 has 28 divisors (see below), whose sum is σ = 241543332. Its totient is φ = 59970560.

The previous prime is 120831791. The next prime is 120831817. The reversal of 120831808 is 808138021.

It can be written as a sum of positive squares in 2 ways, for example, as 70023424 + 50808384 = 8368^2 + 7128^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 120831808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1878 + ... + 15658.

Almost surely, 2^120831808 is an apocalyptic number.

It is an amenable number.

120831808 is a deficient number, since it is larger than the sum of its proper divisors (120711524).

120831808 is a wasteful number, since it uses less digits than its factorization.

120831808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13930 (or 13920 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 120831808 is about 10992.3522505422. The cubic root of 120831808 is about 494.3794666154.

Adding to 120831808 its reverse (808138021), we get a palindrome (928969829).

The spelling of 120831808 in words is "one hundred twenty million, eight hundred thirty-one thousand, eight hundred eight".