331396 has 12 divisors (see below), whose sum is σ = 624652. Its totient is φ = 152928.

The previous prime is 331391. The next prime is 331399. The reversal of 331396 is 693133.

It can be written as a sum of positive squares in 2 ways, for example, as 160000 + 171396 = 400^2 + 414^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 331396.

It is not an unprimeable number, because it can be changed into a prime (331391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3135 + ... + 3238.

2³³¹³⁹⁶ is an apocalyptic number.

It is an amenable number.

331396 is a deficient number, since it is larger than the sum of its proper divisors (293256).

331396 is a wasteful number, since it uses less digits than its factorization.

331396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6390 (or 6388 counting only the distinct ones).

The product of its digits is 1458, while the sum is 25.

The square root of 331396 is about 575.6700443831. The cubic root of 331396 is about 69.2015391641.

It can be divided in two parts, 331 and 396, that added together give a palindrome (727).

The spelling of 331396 in words is "three hundred thirty-one thousand, three hundred ninety-six".