13242431 has 4 divisors (see below), whose sum is σ = 13252512. Its totient is φ = 13232352.

The previous prime is 13242407. The next prime is 13242443. The reversal of 13242431 is 13424231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13242431 - 2⁶ = 13242367 is a prime.

It is a super-2 number, since 2×13242431² = 350723957579522, 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 (13244431) 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 3 ways as a sum of consecutive naturals, for example, 2711 + ... + 5816.

It is an arithmetic number, because the mean of its divisors is an integer number (3313128).

Almost surely, 2^13242431 is an apocalyptic number.

13242431 is a deficient number, since it is larger than the sum of its proper divisors (10081).

13242431 is an equidigital number, since it uses as much as digits as its factorization.

13242431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10080.

The product of its digits is 576, while the sum is 20.

The square root of 13242431 is about 3639.0151140109. The cubic root of 13242431 is about 236.5861078283.

Adding to 13242431 its reverse (13424231), we get a palindrome (26666662).

The spelling of 13242431 in words is "thirteen million, two hundred forty-two thousand, four hundred thirty-one".