13144631 has 8 divisors (see below), whose sum is σ = 13521600. Its totient is φ = 12771808.

The previous prime is 13144603. The next prime is 13144633. The reversal of 13144631 is 13644131.

13144631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13144631 is a prime.

It is a super-2 number, since 2×13144631² = 345562648252322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13144597 and 13144606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144633) 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 7 ways as a sum of consecutive naturals, for example, 6065 + ... + 7941.

It is an arithmetic number, because the mean of its divisors is an integer number (1690200).

Almost surely, 2^13144631 is an apocalyptic number.

13144631 is a deficient number, since it is larger than the sum of its proper divisors (376969).

13144631 is a wasteful number, since it uses less digits than its factorization.

13144631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073.

The product of its digits is 864, while the sum is 23.

The square root of 13144631 is about 3625.5525096184. The cubic root of 13144631 is about 236.0022443050.

Adding to 13144631 its reverse (13644131), we get a palindrome (26788762).

Subtracting 13144631 from its reverse (13644131), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 13144631 in words is "thirteen million, one hundred forty-four thousand, six hundred thirty-one".