11040403231 has 16 divisors (see below), whose sum is σ = 12975812640. Its totient is φ = 9260910720.

The previous prime is 11040403229. The next prime is 11040403267. The reversal of 11040403231 is 13230404011.

It is a cyclic number.

It is not a de Polignac number, because 11040403231 - 2¹ = 11040403229 is a prime.

It is a super-2 number, since 2×11040403231² (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 = 11040403199 and 11040403208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11040403831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370765 + ... + 399433.

It is an arithmetic number, because the mean of its divisors is an integer number (810988290).

Almost surely, 2^11040403231 is an apocalyptic number.

11040403231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11040403231 is a deficient number, since it is larger than the sum of its proper divisors (1935409409).

11040403231 is a wasteful number, since it uses less digits than its factorization.

11040403231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31386.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11040403231 its reverse (13230404011), we get a palindrome (24270807242).

The spelling of 11040403231 in words is "eleven billion, forty million, four hundred three thousand, two hundred thirty-one".