11113331 has 4 divisors (see below), whose sum is σ = 11122152. Its totient is φ = 11104512.

The previous prime is 11113321. The next prime is 11113339. The reversal of 11113331 is 13331111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13331111 = 17 ⋅784183.

It is a cyclic number.

It is not a de Polignac number, because 11113331 - 2¹⁴ = 11096947 is a prime.

It is a super-2 number, since 2×11113331² = 247012251831122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11113339) 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 3 ways as a sum of consecutive naturals, for example, 2126 + ... + 5171.

It is an arithmetic number, because the mean of its divisors is an integer number (2780538).

Almost surely, 2^11113331 is an apocalyptic number.

11113331 is a deficient number, since it is larger than the sum of its proper divisors (8821).

11113331 is an equidigital number, since it uses as much as digits as its factorization.

11113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8820.

The product of its digits is 27, while the sum is 14.

The square root of 11113331 is about 3333.6663000366. Note that the first 3 decimals coincide. The cubic root of 11113331 is about 223.1591763722.

Adding to 11113331 its reverse (13331111), we get a palindrome (24444442).

It can be divided in two parts, 111 and 13331, that multiplied together give a palindrome (1479741).

The spelling of 11113331 in words is "eleven million, one hundred thirteen thousand, three hundred thirty-one".