11321011331 has 16 divisors (see below), whose sum is σ = 13887048384. Its totient is φ = 9007801344.

The previous prime is 11321011283. The next prime is 11321011337. The reversal of 11321011331 is 13311012311.

It is a cyclic number.

It is not a de Polignac number, because 11321011331 - 2¹⁴ = 11320994947 is a prime.

It is a super-3 number, since 3×11321011331³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11321011337) 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, 642920 + ... + 660293.

It is an arithmetic number, because the mean of its divisors is an integer number (867940524).

Almost surely, 2^11321011331 is an apocalyptic number.

11321011331 is a deficient number, since it is larger than the sum of its proper divisors (2566037053).

11321011331 is a wasteful number, since it uses less digits than its factorization.

11321011331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303310.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11321011331 its reverse (13311012311), we get a palindrome (24632023642).

The spelling of 11321011331 in words is "eleven billion, three hundred twenty-one million, eleven thousand, three hundred thirty-one".