11331131323231 has 16 divisors (see below), whose sum is σ = 11579506823808. Its totient is φ = 11084076390400.

The previous prime is 11331131323229. The next prime is 11331131323273. The reversal of 11331131323231 is 13232313113311.

It is a happy number.

It is not a de Polignac number, because 11331131323231 - 2¹ = 11331131323229 is a prime.

It is a super-2 number, since 2×11331131323231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11331131323231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331131324231) 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, 29544426 + ... + 29925496.

It is an arithmetic number, because the mean of its divisors is an integer number (723719176488).

Almost surely, 2^{11331131323231} is an apocalyptic number.

11331131323231 is a deficient number, since it is larger than the sum of its proper divisors (248375500577).

11331131323231 is a wasteful number, since it uses less digits than its factorization.

11331131323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382802.

The product of its digits is 2916, while the sum is 28.

Adding to 11331131323231 its reverse (13232313113311), we get a palindrome (24563444436542).

The spelling of 11331131323231 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred twenty-three thousand, two hundred thirty-one".