11311131121 has 8 divisors (see below), whose sum is σ = 11480144000. Its totient is φ = 11143256832.

The previous prime is 11311131109. The next prime is 11311131211. The reversal of 11311131121 is 12113111311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11311131121 - 2¹⁷ = 11311000049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11311131095 and 11311131104.

It is not an unprimeable number, because it can be changed into a prime (11311171121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264621 + ... + 304378.

It is an arithmetic number, because the mean of its divisors is an integer number (1435018000).

Almost surely, 2^11311131121 is an apocalyptic number.

It is an amenable number.

11311131121 is a deficient number, since it is larger than the sum of its proper divisors (169012879).

11311131121 is a wasteful number, since it uses less digits than its factorization.

11311131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569295.

The product of its digits is 18, while the sum is 16.

Adding to 11311131121 its reverse (12113111311), we get a palindrome (23424242432).

The spelling of 11311131121 in words is "eleven billion, three hundred eleven million, one hundred thirty-one thousand, one hundred twenty-one".