13231224001 has 4 divisors (see below), whose sum is σ = 13231637892. Its totient is φ = 13230810112.

The previous prime is 13231223959. The next prime is 13231224011. The reversal of 13231224001 is 10042213231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9063230401 + 4167993600 = 95201^2 + 64560^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231224001 - 2¹¹ = 13231221953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13231224001.

It is not an unprimeable number, because it can be changed into a prime (13231224011) 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, 154576 + ... + 224401.

It is an arithmetic number, because the mean of its divisors is an integer number (3307909473).

Almost surely, 2^13231224001 is an apocalyptic number.

It is an amenable number.

13231224001 is a deficient number, since it is larger than the sum of its proper divisors (413891).

13231224001 is an equidigital number, since it uses as much as digits as its factorization.

13231224001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413890.

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

Adding to 13231224001 its reverse (10042213231), we get a palindrome (23273437232).

The spelling of 13231224001 in words is "thirteen billion, two hundred thirty-one million, two hundred twenty-four thousand, one".