108231993 has 12 divisors (see below), whose sum is σ = 160560868. Its totient is φ = 70204320.

The previous prime is 108231967. The next prime is 108232009. The reversal of 108231993 is 399132801.

It can be written as a sum of positive squares in 2 ways, for example, as 104591529 + 3640464 = 10227^2 + 1908^2 .

It is not a de Polignac number, because 108231993 - 2⁹ = 108231481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (108231593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162178 + ... + 162843.

Almost surely, 2^108231993 is an apocalyptic number.

It is an amenable number.

108231993 is a deficient number, since it is larger than the sum of its proper divisors (52328875).

108231993 is a wasteful number, since it uses less digits than its factorization.

108231993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325064 (or 325061 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 108231993 is about 10403.4606261570. The cubic root of 108231993 is about 476.5610586996.

The spelling of 108231993 in words is "one hundred eight million, two hundred thirty-one thousand, nine hundred ninety-three".