13011243 has 8 divisors (see below), whose sum is σ = 19826688. Its totient is φ = 7434984.

The previous prime is 13011223. The next prime is 13011253. The reversal of 13011243 is 34211031.

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

It is not a de Polignac number, because 13011243 - 2¹³ = 13003051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13011203) 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, 309771 + ... + 309812.

It is an arithmetic number, because the mean of its divisors is an integer number (2478336).

Almost surely, 2^13011243 is an apocalyptic number.

13011243 is a deficient number, since it is larger than the sum of its proper divisors (6815445).

13011243 is an equidigital number, since it uses as much as digits as its factorization.

13011243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619593.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 13011243 is about 3607.1100620857. The cubic root of 13011243 is about 235.2012339990.

Adding to 13011243 its reverse (34211031), we get a palindrome (47222274).

The spelling of 13011243 in words is "thirteen million, eleven thousand, two hundred forty-three".