13311243 has 16 divisors (see below), whose sum is σ = 21513600. Its totient is φ = 8067240.

The previous prime is 13311239. The next prime is 13311269. The reversal of 13311243 is 34211331.

13311243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13311243 - 2² = 13311239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13311223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22113 + ... + 22706.

It is an arithmetic number, because the mean of its divisors is an integer number (1344600).

Almost surely, 2^13311243 is an apocalyptic number.

13311243 is a deficient number, since it is larger than the sum of its proper divisors (8202357).

13311243 is a wasteful number, since it uses less digits than its factorization.

13311243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44839 (or 44833 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 13311243 is about 3648.4576193235. The cubic root of 13311243 is about 236.9951929805.

Adding to 13311243 its reverse (34211331), we get a palindrome (47522574).

The spelling of 13311243 in words is "thirteen million, three hundred eleven thousand, two hundred forty-three".