331386 has 16 divisors (see below), whose sum is σ = 723168. Its totient is φ = 100400.

The previous prime is 331369. The next prime is 331391. The reversal of 331386 is 683133.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331386.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2445 + ... + 2576.

It is an arithmetic number, because the mean of its divisors is an integer number (45198).

2³³¹³⁸⁶ is an apocalyptic number.

331386 is an abundant number, since it is smaller than the sum of its proper divisors (391782).

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

331386 is a wasteful number, since it uses less digits than its factorization.

331386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037.

The product of its digits is 1296, while the sum is 24.

The square root of 331386 is about 575.6613587866. The cubic root of 331386 is about 69.2008430962.

It can be divided in two parts, 331 and 386, that added together give a palindrome (717).

The spelling of 331386 in words is "three hundred thirty-one thousand, three hundred eighty-six".