331401 has 16 divisors (see below), whose sum is σ = 518144. Its totient is φ = 184464.

The previous prime is 331399. The next prime is 331423. The reversal of 331401 is 104133.

It is not a de Polignac number, because 331401 - 2¹ = 331399 is a prime.

It is a Duffinian number.

331401 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331401.

It is not an unprimeable number, because it can be changed into a prime (331451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720 + ... + 1086.

It is an arithmetic number, because the mean of its divisors is an integer number (32384).

2³³¹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

331401 is a deficient number, since it is larger than the sum of its proper divisors (186743).

331401 is a wasteful number, since it uses less digits than its factorization.

331401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 331401 is about 575.6743871322. The cubic root of 331401 is about 69.2018871928.

Adding to 331401 its reverse (104133), we get a palindrome (435534).

The spelling of 331401 in words is "three hundred thirty-one thousand, four hundred one".