104431189 has 4 divisors (see below), whose sum is σ = 104451724. Its totient is φ = 104410656.

The previous prime is 104431111. The next prime is 104431193. The reversal of 104431189 is 981134401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87142225 + 17288964 = 9335^2 + 4158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104431189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104431189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104431489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3649 + ... + 14905.

It is an arithmetic number, because the mean of its divisors is an integer number (26112931).

Almost surely, 2^104431189 is an apocalyptic number.

It is an amenable number.

104431189 is a deficient number, since it is larger than the sum of its proper divisors (20535).

104431189 is an equidigital number, since it uses as much as digits as its factorization.

104431189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20534.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 104431189 is about 10219.1579398696. The cubic root of 104431189 is about 470.9159578564.

The spelling of 104431189 in words is "one hundred four million, four hundred thirty-one thousand, one hundred eighty-nine".