986311 has 4 divisors (see below), whose sum is σ = 988312. Its totient is φ = 984312.

The previous prime is 986287. The next prime is 986333. The reversal of 986311 is 113689.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113689 = 23 ⋅4943.

It is a cyclic number.

It is not a de Polignac number, because 986311 - 2⁹ = 985799 is a prime.

It is a pancake number, because a pancake can be divided into 986311 parts by 1404 straight cuts.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 986311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (986351) 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, 325 + ... + 1441.

It is an arithmetic number, because the mean of its divisors is an integer number (247078).

2⁹⁸⁶³¹¹ is an apocalyptic number.

986311 is a deficient number, since it is larger than the sum of its proper divisors (2001).

986311 is a wasteful number, since it uses less digits than its factorization.

986311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its digits is 1296, while the sum is 28.

The square root of 986311 is about 993.1319147022. The cubic root of 986311 is about 99.5416019228.

It can be divided in two parts, 9 and 86311, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 986311 in words is "nine hundred eighty-six thousand, three hundred eleven".