11513133 has 12 divisors (see below), whose sum is σ = 17353440. Its totient is φ = 7341576.

The previous prime is 11513077. The next prime is 11513141. The reversal of 11513133 is 33131511.

11513133 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11513133 - 2¹² = 11509037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11513143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27603 + ... + 28016.

It is an arithmetic number, because the mean of its divisors is an integer number (1446120).

Almost surely, 2^11513133 is an apocalyptic number.

It is an amenable number.

11513133 is a deficient number, since it is larger than the sum of its proper divisors (5840307).

11513133 is a wasteful number, since it uses less digits than its factorization.

11513133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55648 (or 55645 counting only the distinct ones).

The product of its digits is 135, while the sum is 18.

The square root of 11513133 is about 3393.1007942588. The cubic root of 11513133 is about 225.8037623562.

Adding to 11513133 its reverse (33131511), we get a palindrome (44644644).

The spelling of 11513133 in words is "eleven million, five hundred thirteen thousand, one hundred thirty-three".