13144813 has 8 divisors (see below), whose sum is σ = 14444640. Its totient is φ = 11862480.

The previous prime is 13144783. The next prime is 13144823. The reversal of 13144813 is 31844131.

13144813 is digitally balanced in base 2, 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-13144813 is a prime.

It is a super-2 number, since 2×13144813² = 345572217609938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770 + ... + 5827.

It is an arithmetic number, because the mean of its divisors is an integer number (1805580).

Almost surely, 2^13144813 is an apocalyptic number.

It is an amenable number.

13144813 is a deficient number, since it is larger than the sum of its proper divisors (1299827).

13144813 is a wasteful number, since it uses less digits than its factorization.

13144813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8747.

The product of its digits is 1152, while the sum is 25.

The square root of 13144813 is about 3625.5776091542. The cubic root of 13144813 is about 236.0033335256.

Adding to 13144813 its reverse (31844131), we get a palindrome (44988944).

It can be divided in two parts, 131 and 44813, that added together give a palindrome (44944).

The spelling of 13144813 in words is "thirteen million, one hundred forty-four thousand, eight hundred thirteen".