331346 has 4 divisors (see below), whose sum is σ = 497022. Its totient is φ = 165672.

The previous prime is 331339. The next prime is 331349. The reversal of 331346 is 643133.

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

It can be written as a sum of positive squares in only one way, i.e., 261121 + 70225 = 511^2 + 265^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (331349) by changing a digit.

331346 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82835 + ... + 82838.

2³³¹³⁴⁶ is an apocalyptic number.

331346 is a deficient number, since it is larger than the sum of its proper divisors (165676).

331346 is a wasteful number, since it uses less digits than its factorization.

331346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165675.

The product of its digits is 648, while the sum is 20.

The square root of 331346 is about 575.6266150900. The cubic root of 331346 is about 69.1980586846.

Adding to 331346 its reverse (643133), we get a palindrome (974479).

The spelling of 331346 in words is "three hundred thirty-one thousand, three hundred forty-six".