11331564 has 12 divisors (see below), whose sum is σ = 26440344. Its totient is φ = 3777184.

The previous prime is 11331563. The next prime is 11331577. The reversal of 11331564 is 46513311.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (11331563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472137 + ... + 472160.

It is an arithmetic number, because the mean of its divisors is an integer number (2203362).

Almost surely, 2^11331564 is an apocalyptic number.

It is an amenable number.

11331564 is an abundant number, since it is smaller than the sum of its proper divisors (15108780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11331564 is a wasteful number, since it uses less digits than its factorization.

11331564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944304 (or 944302 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 11331564 is about 3366.2388507056. The cubic root of 11331564 is about 224.6104469253.

Adding to 11331564 its reverse (46513311), we get a palindrome (57844875).

The spelling of 11331564 in words is "eleven million, three hundred thirty-one thousand, five hundred sixty-four".