11564331 has 16 divisors (see below), whose sum is σ = 16938240. Its totient is φ = 6985440.

The previous prime is 11564327. The next prime is 11564339. The reversal of 11564331 is 13346511.

11564331 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11564331 - 2² = 11564327 is a prime.

It is a super-2 number, since 2×11564331² = 267467502955122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11564339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3100 + ... + 5721.

It is an arithmetic number, because the mean of its divisors is an integer number (1058640).

Almost surely, 2^11564331 is an apocalyptic number.

11564331 is a deficient number, since it is larger than the sum of its proper divisors (5373909).

11564331 is a wasteful number, since it uses less digits than its factorization.

11564331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8866.

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

The square root of 11564331 is about 3400.6368521205. The cubic root of 11564331 is about 226.1379779783.

It can be divided in two parts, 115 and 64331, that added together give a palindrome (64446).

The spelling of 11564331 in words is "eleven million, five hundred sixty-four thousand, three hundred thirty-one".