13191441 has 4 divisors (see below), whose sum is σ = 17588592. Its totient is φ = 8794292.

The previous prime is 13191421. The next prime is 13191449. The reversal of 13191441 is 14419131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14419131 = 3 ⋅4806377.

It is a cyclic number.

It is not a de Polignac number, because 13191441 - 2¹³ = 13183249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13191449) 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, 2198571 + ... + 2198576.

It is an arithmetic number, because the mean of its divisors is an integer number (4397148).

Almost surely, 2^13191441 is an apocalyptic number.

It is an amenable number.

13191441 is a deficient number, since it is larger than the sum of its proper divisors (4397151).

13191441 is an equidigital number, since it uses as much as digits as its factorization.

13191441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397150.

The product of its digits is 432, while the sum is 24.

The square root of 13191441 is about 3632.0023403076. The cubic root of 13191441 is about 236.2820588616.

The spelling of 13191441 in words is "thirteen million, one hundred ninety-one thousand, four hundred forty-one".