13431115 has 4 divisors (see below), whose sum is σ = 16117344. Its totient is φ = 10744888.

The previous prime is 13431113. The next prime is 13431127. The reversal of 13431115 is 51113431.

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

It is a cyclic number.

It is not a de Polignac number, because 13431115 - 2¹ = 13431113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13431092 and 13431101.

It is not an unprimeable number, because it can be changed into a prime (13431113) 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 3 ways as a sum of consecutive naturals, for example, 1343107 + ... + 1343116.

It is an arithmetic number, because the mean of its divisors is an integer number (4029336).

Almost surely, 2^13431115 is an apocalyptic number.

13431115 is a deficient number, since it is larger than the sum of its proper divisors (2686229).

13431115 is an equidigital number, since it uses as much as digits as its factorization.

13431115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686228.

The product of its digits is 180, while the sum is 19.

The square root of 13431115 is about 3664.8485644021. The cubic root of 13431115 is about 237.7044739552.

Adding to 13431115 its reverse (51113431), we get a palindrome (64544546).

The spelling of 13431115 in words is "thirteen million, four hundred thirty-one thousand, one hundred fifteen".