11404138031 has 32 divisors (see below), whose sum is σ = 13945720320. Its totient is φ = 9182678400.

The previous prime is 11404138019. The next prime is 11404138111. The reversal of 11404138031 is 13083140411.

It is a cyclic number.

It is not a de Polignac number, because 11404138031 - 2¹⁰ = 11404137007 is a prime.

It is a super-2 number, since 2×11404138031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11404138531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 667526 + ... + 684396.

It is an arithmetic number, because the mean of its divisors is an integer number (435803760).

Almost surely, 2^11404138031 is an apocalyptic number.

11404138031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11404138031 is a deficient number, since it is larger than the sum of its proper divisors (2541582289).

11404138031 is a wasteful number, since it uses less digits than its factorization.

11404138031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17087.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 11404138031 its reverse (13083140411), we get a palindrome (24487278442).

The spelling of 11404138031 in words is "eleven billion, four hundred four million, one hundred thirty-eight thousand, thirty-one".