331606 has 8 divisors (see below), whose sum is σ = 542664. Its totient is φ = 150720.

The previous prime is 331603. The next prime is 331609. The reversal of 331606 is 606133.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (331603) and next prime (331609).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7515 + ... + 7558.

It is an arithmetic number, because the mean of its divisors is an integer number (67833).

2³³¹⁶⁰⁶ is an apocalyptic number.

331606 is a deficient number, since it is larger than the sum of its proper divisors (211058).

331606 is a wasteful number, since it uses less digits than its factorization.

331606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15086.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 331606 is about 575.8524116473. The cubic root of 331606 is about 69.2161533565.

Adding to 331606 its reverse (606133), we get a palindrome (937739).

The spelling of 331606 in words is "three hundred thirty-one thousand, six hundred six".