104431513 has 4 divisors (see below), whose sum is σ = 105689808. Its totient is φ = 103173220.

The previous prime is 104431507. The next prime is 104431531. The reversal of 104431513 is 315134401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104431513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104431553) 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 3 ways as a sum of consecutive naturals, for example, 629023 + ... + 629188.

It is an arithmetic number, because the mean of its divisors is an integer number (26422452).

Almost surely, 2^104431513 is an apocalyptic number.

It is an amenable number.

104431513 is a deficient number, since it is larger than the sum of its proper divisors (1258295).

104431513 is an equidigital number, since it uses as much as digits as its factorization.

104431513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258294.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 104431513 is about 10219.1737924355. The cubic root of 104431513 is about 470.9164448648.

Adding to 104431513 its reverse (315134401), we get a palindrome (419565914).

The spelling of 104431513 in words is "one hundred four million, four hundred thirty-one thousand, five hundred thirteen".