11331211131131 has 4 divisors (see below), whose sum is σ = 11997752962392. Its totient is φ = 10664669299872.

The previous prime is 11331211131073. The next prime is 11331211131139. The reversal of 11331211131131 is 13113111213311.

It is a happy number.

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 11331211131131 - 2¹⁴ = 11331211114747 is a prime.

It is a super-2 number, since 2×11331211131131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331211131097 and 11331211131106.

It is not an unprimeable number, because it can be changed into a prime (11331211131139) 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, 333270915605 + ... + 333270915638.

It is an arithmetic number, because the mean of its divisors is an integer number (2999438240598).

Almost surely, 2^{11331211131131} is an apocalyptic number.

11331211131131 is a deficient number, since it is larger than the sum of its proper divisors (666541831261).

11331211131131 is an equidigital number, since it uses as much as digits as its factorization.

11331211131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666541831260.

The product of its digits is 162, while the sum is 23.

Adding to 11331211131131 its reverse (13113111213311), we get a palindrome (24444322344442).

The spelling of 11331211131131 in words is "eleven trillion, three hundred thirty-one billion, two hundred eleven million, one hundred thirty-one thousand, one hundred thirty-one".