108531899 has 16 divisors (see below), whose sum is σ = 128440320. Its totient is φ = 89743680.

The previous prime is 108531869. The next prime is 108531923. The reversal of 108531899 is 998135801.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 108531899 - 2¹⁶ = 108466363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108531869) 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 15 ways as a sum of consecutive naturals, for example, 95567 + ... + 96695.

It is an arithmetic number, because the mean of its divisors is an integer number (8027520).

Almost surely, 2^108531899 is an apocalyptic number.

108531899 is a deficient number, since it is larger than the sum of its proper divisors (19908421).

108531899 is a wasteful number, since it uses less digits than its factorization.

108531899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 108531899 is about 10417.8644164723. The cubic root of 108531899 is about 477.0008291969. Note that the first 3 decimals are identical.

The spelling of 108531899 in words is "one hundred eight million, five hundred thirty-one thousand, eight hundred ninety-nine".