864311 has 12 divisors (see below), whose sum is σ = 1039680. Its totient is φ = 715680.

The previous prime is 864307. The next prime is 864319. The reversal of 864311 is 113468.

864311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 864311 - 2² = 864307 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864311.

It is not an unprimeable number, because it can be changed into a prime (864319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1235 + ... + 1803.

It is an arithmetic number, because the mean of its divisors is an integer number (86640).

2⁸⁶⁴³¹¹ is an apocalyptic number.

864311 is a deficient number, since it is larger than the sum of its proper divisors (175369).

864311 is a wasteful number, since it uses less digits than its factorization.

864311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 607 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 864311 is about 929.6832794022. The cubic root of 864311 is about 95.2554895650.

Adding to 864311 its reverse (113468), we get a palindrome (977779).

The spelling of 864311 in words is "eight hundred sixty-four thousand, three hundred eleven".