11331110411231 has 12 divisors (see below), whose sum is σ = 12991534181712. Its totient is φ = 9844222617216.

The previous prime is 11331110411143. The next prime is 11331110411263. The reversal of 11331110411231 is 13211401113311.

It is a de Polignac number, because none of the positive numbers 2^k-11331110411231 is a prime.

It is a super-2 number, since 2×11331110411231² (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 = 11331110411197 and 11331110411206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331110416231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1971996851 + ... + 1972002596.

It is an arithmetic number, because the mean of its divisors is an integer number (1082627848476).

Almost surely, 2^{11331110411231} is an apocalyptic number.

11331110411231 is a deficient number, since it is larger than the sum of its proper divisors (1660423770481).

11331110411231 is a wasteful number, since it uses less digits than its factorization.

11331110411231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943999490 (or 3943999477 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 11331110411231 its reverse (13211401113311), we get a palindrome (24542511524542).

The spelling of 11331110411231 in words is "eleven trillion, three hundred thirty-one billion, one hundred ten million, four hundred eleven thousand, two hundred thirty-one".