13144231 has 4 divisors (see below), whose sum is σ = 13464864. Its totient is φ = 12823600.

The previous prime is 13144211. The next prime is 13144249. The reversal of 13144231 is 13244131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13244131 = 191 ⋅69341.

It is a cyclic number.

It is not a de Polignac number, because 13144231 - 2⁵ = 13144199 is a prime.

It is a super-2 number, since 2×13144231² = 345541617162722, 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 = 13144199 and 13144208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144211) 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, 160255 + ... + 160336.

It is an arithmetic number, because the mean of its divisors is an integer number (3366216).

Almost surely, 2^13144231 is an apocalyptic number.

13144231 is a deficient number, since it is larger than the sum of its proper divisors (320633).

13144231 is an equidigital number, since it uses as much as digits as its factorization.

13144231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320632.

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

The square root of 13144231 is about 3625.4973451928. The cubic root of 13144231 is about 235.9998503781. Note that the first 3 decimals are identical.

Adding to 13144231 its reverse (13244131), we get a palindrome (26388362).

The spelling of 13144231 in words is "thirteen million, one hundred forty-four thousand, two hundred thirty-one".