11131311 has 16 divisors (see below), whose sum is σ = 15877728. Its totient is φ = 6912000.

The previous prime is 11131279. The next prime is 11131327. The reversal of 11131311 is 11313111.

It is not a de Polignac number, because 11131311 - 2⁵ = 11131279 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131361) 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, 4071 + ... + 6231.

It is an arithmetic number, because the mean of its divisors is an integer number (992358).

Almost surely, 2^11131311 is an apocalyptic number.

11131311 is a deficient number, since it is larger than the sum of its proper divisors (4746417).

11131311 is a wasteful number, since it uses less digits than its factorization.

11131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282.

The product of its digits is 9, while the sum is 12.

The square root of 11131311 is about 3336.3619407972. The cubic root of 11131311 is about 223.2794595431.

Adding to 11131311 its reverse (11313111), we get a palindrome (22444422).

The spelling of 11131311 in words is "eleven million, one hundred thirty-one thousand, three hundred eleven".