11131102231 has 2 divisors, whose sum is σ = 11131102232. Its totient is φ = 11131102230.

The previous prime is 11131102217. The next prime is 11131102267. The reversal of 11131102231 is 13220113111.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13220113111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11131102231 - 2¹⁵ = 11131069463 is a prime.

It is a super-2 number, since 2×11131102231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11131102201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565551115 + 5565551116.

It is an arithmetic number, because the mean of its divisors is an integer number (5565551116).

Almost surely, 2^11131102231 is an apocalyptic number.

11131102231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131102231 is an equidigital number, since it uses as much as digits as its factorization.

11131102231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11131102231 its reverse (13220113111), we get a palindrome (24351215342).

The spelling of 11131102231 in words is "eleven billion, one hundred thirty-one million, one hundred two thousand, two hundred thirty-one".