11431329 has 24 divisors (see below), whose sum is σ = 18868032. Its totient is φ = 6027840.

The previous prime is 11431297. The next prime is 11431349. The reversal of 11431329 is 92313411.

It is not a de Polignac number, because 11431329 - 2⁵ = 11431297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11431299 and 11431308.

It is not an unprimeable number, because it can be changed into a prime (11431349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1939 + ... + 5159.

It is an arithmetic number, because the mean of its divisors is an integer number (786168).

Almost surely, 2^11431329 is an apocalyptic number.

It is an amenable number.

11431329 is a deficient number, since it is larger than the sum of its proper divisors (7436703).

11431329 is a wasteful number, since it uses less digits than its factorization.

11431329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257 (or 3244 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 11431329 is about 3381.0248446292. The cubic root of 11431329 is about 225.2676912675.

The spelling of 11431329 in words is "eleven million, four hundred thirty-one thousand, three hundred twenty-nine".