13191243 has 8 divisors (see below), whose sum is σ = 18941328. Its totient is φ = 8117664.

The previous prime is 13191229. The next prime is 13191247. The reversal of 13191243 is 34219131.

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

It is not a de Polignac number, because 13191243 - 2⁶ = 13191179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13191247) 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, 169080 + ... + 169157.

It is an arithmetic number, because the mean of its divisors is an integer number (2367666).

Almost surely, 2^13191243 is an apocalyptic number.

13191243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13191243 is a deficient number, since it is larger than the sum of its proper divisors (5750085).

13191243 is a wasteful number, since it uses less digits than its factorization.

13191243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338253.

The product of its digits is 648, while the sum is 24.

The square root of 13191243 is about 3631.9750825136. The cubic root of 13191243 is about 236.2808766788.

The spelling of 13191243 in words is "thirteen million, one hundred ninety-one thousand, two hundred forty-three".