11128331 has 4 divisors (see below), whose sum is σ = 11365152. Its totient is φ = 10891512.

The previous prime is 11128309. The next prime is 11128361. The reversal of 11128331 is 13382111.

11128331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11128331 - 2¹⁰ = 11127307 is a prime.

It is a super-2 number, since 2×11128331² = 247679501691122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11128361) 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, 118340 + ... + 118433.

It is an arithmetic number, because the mean of its divisors is an integer number (2841288).

Almost surely, 2^11128331 is an apocalyptic number.

11128331 is a deficient number, since it is larger than the sum of its proper divisors (236821).

11128331 is an equidigital number, since it uses as much as digits as its factorization.

11128331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236820.

The product of its digits is 144, while the sum is 20.

The square root of 11128331 is about 3335.9153166710. The cubic root of 11128331 is about 223.2595328045.

The spelling of 11128331 in words is "eleven million, one hundred twenty-eight thousand, three hundred thirty-one".