11231564 has 24 divisors (see below), whose sum is σ = 20165376. Its totient is φ = 5472000.

The previous prime is 11231537. The next prime is 11231629. The reversal of 11231564 is 46513211.

It is a super-2 number, since 2×11231564² = 252296059772192, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 46484 + ... + 46724.

It is an arithmetic number, because the mean of its divisors is an integer number (840224).

Almost surely, 2^11231564 is an apocalyptic number.

It is an amenable number.

11231564 is a deficient number, since it is larger than the sum of its proper divisors (8933812).

11231564 is a wasteful number, since it uses less digits than its factorization.

11231564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 495 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 11231564 is about 3351.3525627722. The cubic root of 11231564 is about 223.9477716243.

Adding to 11231564 its reverse (46513211), we get a palindrome (57744775).

The spelling of 11231564 in words is "eleven million, two hundred thirty-one thousand, five hundred sixty-four".