11131213111331 has 16 divisors (see below), whose sum is σ = 12563347507200. Its totient is φ = 9799411010688.

The previous prime is 11131213111309. The next prime is 11131213111387. The reversal of 11131213111331 is 13311131213111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11131213111331 - 2²² = 11131208917027 is a prime.

It is a super-2 number, since 2×11131213111331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11131213111297 and 11131213111306.

It is not an unprimeable number, because it can be changed into a prime (11131213111391) 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, 218088155 + ... + 218139188.

It is an arithmetic number, because the mean of its divisors is an integer number (785209219200).

Almost surely, 2^{11131213111331} is an apocalyptic number.

11131213111331 is a deficient number, since it is larger than the sum of its proper divisors (1432134395869).

11131213111331 is a wasteful number, since it uses less digits than its factorization.

11131213111331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436227458.

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

Adding to 11131213111331 its reverse (13311131213111), we get a palindrome (24442344324442).

The spelling of 11131213111331 in words is "eleven trillion, one hundred thirty-one billion, two hundred thirteen million, one hundred eleven thousand, three hundred thirty-one".