13231424 has 28 divisors (see below), whose sum is σ = 27165300. Its totient is φ = 6386688.

The previous prime is 13231411. The next prime is 13231481. The reversal of 13231424 is 42413231.

It can be written as a sum of positive squares in 2 ways, for example, as 7661824 + 5569600 = 2768^2 + 2360^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13231396 and 13231405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709 + ... + 5420.

Almost surely, 2^13231424 is an apocalyptic number.

It is an amenable number.

13231424 is an abundant number, since it is smaller than the sum of its proper divisors (13933876).

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

13231424 is an equidigital number, since it uses as much as digits as its factorization.

13231424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7170 (or 7160 counting only the distinct ones).

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

The square root of 13231424 is about 3637.5024398617. The cubic root of 13231424 is about 236.5205401812.

Adding to 13231424 its reverse (42413231), we get a palindrome (55644655).

The spelling of 13231424 in words is "thirteen million, two hundred thirty-one thousand, four hundred twenty-four".