111031101121311 has 20 divisors (see below), whose sum is σ = 189555742303312. Its totient is φ = 63446343497568.

The previous prime is 111031101121309. The next prime is 111031101121321. The reversal of 111031101121311 is 113121101130111.

It is a happy number.

111031101121311 is a `hidden beast` number, since 1 + 1 + 10 + 311 + 0 + 11 + 21 + 311 = 666.

It is not a de Polignac number, because 111031101121311 - 2¹ = 111031101121309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111031101121321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 97911023350 + ... + 97911024483.

Almost surely, 2^{111031101121311} is an apocalyptic number.

111031101121311 is a deficient number, since it is larger than the sum of its proper divisors (78524641182001).

111031101121311 is an equidigital number, since it uses as much as digits as its factorization.

111031101121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195822047852 (or 195822047843 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 18.

Adding to 111031101121311 its reverse (113121101130111), we get a palindrome (224152202251422).

The spelling of 111031101121311 in words is "one hundred eleven trillion, thirty-one billion, one hundred one million, one hundred twenty-one thousand, three hundred eleven".