13231724 has 12 divisors (see below), whose sum is σ = 25260648. Its totient is φ = 6014400.

The previous prime is 13231721. The next prime is 13231741. The reversal of 13231724 is 42713231.

It is a self number, because there is not a number n which added to its sum of digits gives 13231724.

It is not an unprimeable number, because it can be changed into a prime (13231721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150317 + ... + 150404.

It is an arithmetic number, because the mean of its divisors is an integer number (2105054).

Almost surely, 2^13231724 is an apocalyptic number.

It is an amenable number.

13231724 is a deficient number, since it is larger than the sum of its proper divisors (12028924).

13231724 is a wasteful number, since it uses less digits than its factorization.

13231724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300736 (or 300734 counting only the distinct ones).

The product of its digits is 1008, while the sum is 23.

The square root of 13231724 is about 3637.5436767137. The cubic root of 13231724 is about 236.5223277345.

Adding to 13231724 its reverse (42713231), we get a palindrome (55944955).

The spelling of 13231724 in words is "thirteen million, two hundred thirty-one thousand, seven hundred twenty-four".