111123131311 has 8 divisors (see below), whose sum is σ = 117672104160. Its totient is φ = 104575527168.

The previous prime is 111123131299. The next prime is 111123131341. The reversal of 111123131311 is 113131321111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111123131311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111123131341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172611 + ... + 502036.

It is an arithmetic number, because the mean of its divisors is an integer number (14709013020).

Almost surely, 2^111123131311 is an apocalyptic number.

111123131311 is a deficient number, since it is larger than the sum of its proper divisors (6548972849).

111123131311 is an equidigital number, since it uses as much as digits as its factorization.

111123131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684353.

The product of its digits is 54, while the sum is 19.

Adding to 111123131311 its reverse (113131321111), we get a palindrome (224254452422).

The spelling of 111123131311 in words is "one hundred eleven billion, one hundred twenty-three million, one hundred thirty-one thousand, three hundred eleven".