11126531 has 4 divisors (see below), whose sum is σ = 11982432. Its totient is φ = 10270632.

The previous prime is 11126519. The next prime is 11126537. The reversal of 11126531 is 13562111.

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 11126531 - 2¹⁴ = 11110147 is a prime.

It is a super-3 number, since 3×11126531³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11126537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427931 + ... + 427956.

It is an arithmetic number, because the mean of its divisors is an integer number (2995608).

Almost surely, 2^11126531 is an apocalyptic number.

11126531 is a deficient number, since it is larger than the sum of its proper divisors (855901).

11126531 is an equidigital number, since it uses as much as digits as its factorization.

11126531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855900.

The product of its digits is 180, while the sum is 20.

The square root of 11126531 is about 3335.6455147392. The cubic root of 11126531 is about 223.2474947960.

Adding to 11126531 its reverse (13562111), we get a palindrome (24688642).

The spelling of 11126531 in words is "eleven million, one hundred twenty-six thousand, five hundred thirty-one".