13104431 has 4 divisors (see below), whose sum is σ = 13326600. Its totient is φ = 12882264.

The previous prime is 13104389. The next prime is 13104437. The reversal of 13104431 is 13440131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13440131 = 647 ⋅20773.

It is a cyclic number.

It is not a de Polignac number, because 13104431 - 2⁶ = 13104367 is a prime.

It is a super-2 number, since 2×13104431² = 343452223667522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13104437) 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, 110996 + ... + 111113.

It is an arithmetic number, because the mean of its divisors is an integer number (3331650).

Almost surely, 2^13104431 is an apocalyptic number.

13104431 is a deficient number, since it is larger than the sum of its proper divisors (222169).

13104431 is an equidigital number, since it uses as much as digits as its factorization.

13104431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222168.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 13104431 is about 3620.0042817654. The cubic root of 13104431 is about 235.7614114181.

Adding to 13104431 its reverse (13440131), we get a palindrome (26544562).

The spelling of 13104431 in words is "thirteen million, one hundred four thousand, four hundred thirty-one".