331601 has 4 divisors (see below), whose sum is σ = 333312. Its totient is φ = 329892.

The previous prime is 331589. The next prime is 331603. The reversal of 331601 is 106133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106133 = 211 ⋅503.

It is a cyclic number.

It is not a de Polignac number, because 331601 - 2⁶ = 331537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

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, 521 + ... + 966.

It is an arithmetic number, because the mean of its divisors is an integer number (83328).

2³³¹⁶⁰¹ is an apocalyptic number.

It is an amenable number.

331601 is a deficient number, since it is larger than the sum of its proper divisors (1711).

331601 is a wasteful number, since it uses less digits than its factorization.

331601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 331601 is about 575.8480702408. The cubic root of 331601 is about 69.2158054712.

Adding to 331601 its reverse (106133), we get a palindrome (437734).

The spelling of 331601 in words is "three hundred thirty-one thousand, six hundred one".