11132531 has 4 divisors (see below), whose sum is σ = 11151192. Its totient is φ = 11113872.

The previous prime is 11132521. The next prime is 11132543. The reversal of 11132531 is 13523111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11132531 - 2¹⁰ = 11131507 is a prime.

It is a super-2 number, since 2×11132531² = 247866492931922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11132521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8405 + ... + 9638.

It is an arithmetic number, because the mean of its divisors is an integer number (2787798).

Almost surely, 2^11132531 is an apocalyptic number.

11132531 is a deficient number, since it is larger than the sum of its proper divisors (18661).

11132531 is an equidigital number, since it uses as much as digits as its factorization.

11132531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18660.

The product of its digits is 90, while the sum is 17.

The square root of 11132531 is about 3336.5447696682. The cubic root of 11132531 is about 223.2876164436.

Adding to 11132531 its reverse (13523111), we get a palindrome (24655642).

The spelling of 11132531 in words is "eleven million, one hundred thirty-two thousand, five hundred thirty-one".