13243424431 has 4 divisors (see below), whose sum is σ = 13243682664. Its totient is φ = 13243166200.

The previous prime is 13243424423. The next prime is 13243424443. The reversal of 13243424431 is 13442434231.

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 13243424431 - 2³ = 13243424423 is a prime.

It is a super-2 number, since 2×13243424431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13243424393 and 13243424402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243424401) 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, 23260 + ... + 164401.

It is an arithmetic number, because the mean of its divisors is an integer number (3310920666).

Almost surely, 2^13243424431 is an apocalyptic number.

13243424431 is a deficient number, since it is larger than the sum of its proper divisors (258233).

13243424431 is an equidigital number, since it uses as much as digits as its factorization.

13243424431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258232.

The product of its digits is 27648, while the sum is 31.

Adding to 13243424431 its reverse (13442434231), we get a palindrome (26685858662).

The spelling of 13243424431 in words is "thirteen billion, two hundred forty-three million, four hundred twenty-four thousand, four hundred thirty-one".