311118 has 8 divisors (see below), whose sum is σ = 622248. Its totient is φ = 103704.

The previous prime is 311111. The next prime is 311123. The reversal of 311118 is 811113.

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

311118 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 311097 and 311106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311111) by changing a digit.

311118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25921 + ... + 25932.

It is an arithmetic number, because the mean of its divisors is an integer number (77781).

2³¹¹¹¹⁸ is an apocalyptic number.

311118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311118 is a wasteful number, since it uses less digits than its factorization.

311118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51858.

The product of its digits is 24, while the sum is 15.

The square root of 311118 is about 557.7795263363. The cubic root of 311118 is about 67.7602572488.

The spelling of 311118 in words is "three hundred eleven thousand, one hundred eighteen".