111311311 has 8 divisors (see below), whose sum is σ = 112331648. Its totient is φ = 110295000.

The previous prime is 111311303. The next prime is 111311341. The reversal of 111311311 is 113113111.

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

It is a cyclic number.

It is not a de Polignac number, because 111311311 - 2³ = 111311303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111311291 and 111311300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311341) 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, 85576 + ... + 86866.

It is an arithmetic number, because the mean of its divisors is an integer number (14041456).

Almost surely, 2^111311311 is an apocalyptic number.

111311311 is a deficient number, since it is larger than the sum of its proper divisors (1020337).

111311311 is a wasteful number, since it uses less digits than its factorization.

111311311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013.

The product of its digits is 9, while the sum is 13.

The square root of 111311311 is about 10550.4175746745. The cubic root of 111311311 is about 481.0384217302.

Adding to 111311311 its reverse (113113111), we get a palindrome (224424422).

The spelling of 111311311 in words is "one hundred eleven million, three hundred eleven thousand, three hundred eleven".