11404431 has 6 divisors (see below), whose sum is σ = 16473080. Its totient is φ = 7602948.

The previous prime is 11404423. The next prime is 11404447. The reversal of 11404431 is 13440411.

It is not a de Polignac number, because 11404431 - 2³ = 11404423 is a prime.

It is a super-2 number, since 2×11404431² = 260122092867522, which 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 (11404411) 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 5 ways as a sum of consecutive naturals, for example, 633571 + ... + 633588.

Almost surely, 2^11404431 is an apocalyptic number.

11404431 is a deficient number, since it is larger than the sum of its proper divisors (5068649).

11404431 is a wasteful number, since it uses less digits than its factorization.

11404431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267165 (or 1267162 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 11404431 is about 3377.0447139474. The cubic root of 11404431 is about 225.0908670018.

Adding to 11404431 its reverse (13440411), we get a palindrome (24844842).

The spelling of 11404431 in words is "eleven million, four hundred four thousand, four hundred thirty-one".