13131424 has 24 divisors (see below), whose sum is σ = 26405568. Its totient is φ = 6425280.

The previous prime is 13131421. The next prime is 13131449. The reversal of 13131424 is 42413131.

It is not an unprimeable number, because it can be changed into a prime (13131421) 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, 2862 + ... + 5869.

It is an arithmetic number, because the mean of its divisors is an integer number (1100232).

Almost surely, 2^13131424 is an apocalyptic number.

It is an amenable number.

13131424 is an abundant number, since it is smaller than the sum of its proper divisors (13274144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13131424 is an equidigital number, since it uses as much as digits as its factorization.

13131424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8788 (or 8780 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 13131424 is about 3623.7306743189. The cubic root of 13131424 is about 235.9231771403.

Adding to 13131424 its reverse (42413131), we get a palindrome (55544555).

The spelling of 13131424 in words is "thirteen million, one hundred thirty-one thousand, four hundred twenty-four".