11240134531 has 4 divisors (see below), whose sum is σ = 11280712912. Its totient is φ = 11199556152.

The previous prime is 11240134487. The next prime is 11240134547. The reversal of 11240134531 is 13543104211.

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 11240134531 - 2¹¹ = 11240132483 is a prime.

It is a super-2 number, since 2×11240134531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11240134496 and 11240134505.

It is not an unprimeable number, because it can be changed into a prime (11240174531) 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, 20288775 + ... + 20289328.

It is an arithmetic number, because the mean of its divisors is an integer number (2820178228).

Almost surely, 2^11240134531 is an apocalyptic number.

11240134531 is a deficient number, since it is larger than the sum of its proper divisors (40578381).

11240134531 is an equidigital number, since it uses as much as digits as its factorization.

11240134531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40578380.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 11240134531 its reverse (13543104211), we get a palindrome (24783238742).

The spelling of 11240134531 in words is "eleven billion, two hundred forty million, one hundred thirty-four thousand, five hundred thirty-one".