2018311 has 4 divisors (see below), whose sum is σ = 2042712. Its totient is φ = 1993912.

The previous prime is 2018309. The next prime is 2018333. The reversal of 2018311 is 1138102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2018311 - 2¹ = 2018309 is a prime.

It is a Duffinian number.

2018311 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12076 + ... + 12241.

It is an arithmetic number, because the mean of its divisors is an integer number (510678).

2^2018311 is an apocalyptic number.

2018311 is a deficient number, since it is larger than the sum of its proper divisors (24401).

2018311 is an equidigital number, since it uses as much as digits as its factorization.

2018311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24400.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 2018311 is about 1420.6727279708. The cubic root of 2018311 is about 126.3754443767.

The spelling of 2018311 in words is "two million, eighteen thousand, three hundred eleven".