11531043 has 12 divisors (see below), whose sum is σ = 17532840. Its totient is φ = 7282656.

The previous prime is 11531041. The next prime is 11531059. The reversal of 11531043 is 34013511.

11531043 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 11531043 - 2¹ = 11531041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11531041) 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, 33546 + ... + 33887.

It is an arithmetic number, because the mean of its divisors is an integer number (1461070).

Almost surely, 2^11531043 is an apocalyptic number.

11531043 is a deficient number, since it is larger than the sum of its proper divisors (6001797).

11531043 is a wasteful number, since it uses less digits than its factorization.

11531043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67458 (or 67455 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 11531043 is about 3395.7389475635. The cubic root of 11531043 is about 225.9207895850.

Adding to 11531043 its reverse (34013511), we get a palindrome (45544554).

The spelling of 11531043 in words is "eleven million, five hundred thirty-one thousand, forty-three".