13116243 has 32 divisors (see below), whose sum is σ = 20772864. Its totient is φ = 7206912.

The previous prime is 13116239. The next prime is 13116263. The reversal of 13116243 is 34261131.

It is not a de Polignac number, because 13116243 - 2² = 13116239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13116203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95671 + ... + 95807.

It is an arithmetic number, because the mean of its divisors is an integer number (649152).

Almost surely, 2^13116243 is an apocalyptic number.

13116243 is a deficient number, since it is larger than the sum of its proper divisors (7656621).

13116243 is a wasteful number, since it uses less digits than its factorization.

13116243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its digits is 432, while the sum is 21.

The square root of 13116243 is about 3621.6354040682. The cubic root of 13116243 is about 235.8322265872.

Adding to 13116243 its reverse (34261131), we get a palindrome (47377374).

The spelling of 13116243 in words is "thirteen million, one hundred sixteen thousand, two hundred forty-three".