13504131 has 8 divisors (see below), whose sum is σ = 20006160. Its totient is φ = 9002736.

The previous prime is 13504109. The next prime is 13504157. The reversal of 13504131 is 13140531.

It is not a de Polignac number, because 13504131 - 2⁹ = 13503619 is a prime.

It is a super-2 number, since 2×13504131² = 364723108130322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13504331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250050 + ... + 250103.

It is an arithmetic number, because the mean of its divisors is an integer number (2500770).

Almost surely, 2^13504131 is an apocalyptic number.

13504131 is a deficient number, since it is larger than the sum of its proper divisors (6502029).

13504131 is an equidigital number, since it uses as much as digits as its factorization.

13504131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500162 (or 500156 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 13504131 is about 3674.7967290722. The cubic root of 13504131 is about 238.1344425544.

Adding to 13504131 its reverse (13140531), we get a palindrome (26644662).

The spelling of 13504131 in words is "thirteen million, five hundred four thousand, one hundred thirty-one".