11040340431 has 16 divisors (see below), whose sum is σ = 15498707840. Its totient is φ = 6971274720.

The previous prime is 11040340391. The next prime is 11040340433. The reversal of 11040340431 is 13404304011.

11040340431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11040340431 - 2¹¹ = 11040338383 is a prime.

It is a super-2 number, since 2×11040340431² (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 = 11040340398 and 11040340407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11040340433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266301 + ... + 304953.

It is an arithmetic number, because the mean of its divisors is an integer number (968669240).

Almost surely, 2^11040340431 is an apocalyptic number.

11040340431 is a deficient number, since it is larger than the sum of its proper divisors (4458367409).

11040340431 is a wasteful number, since it uses less digits than its factorization.

11040340431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43686.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 11040340431 its reverse (13404304011), we get a palindrome (24444644442).

The spelling of 11040340431 in words is "eleven billion, forty million, three hundred forty thousand, four hundred thirty-one".