331045 has 16 divisors (see below), whose sum is σ = 467712. Its totient is φ = 221760.

The previous prime is 331043. The next prime is 331063. The reversal of 331045 is 540133.

It is not a de Polignac number, because 331045 - 2¹ = 331043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331043) 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, 484 + ... + 946.

It is an arithmetic number, because the mean of its divisors is an integer number (29232).

2³³¹⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

331045 is a deficient number, since it is larger than the sum of its proper divisors (136667).

331045 is a wasteful number, since it uses less digits than its factorization.

331045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 331045 is about 575.3651014791. The cubic root of 331045 is about 69.1770987958.

Adding to 331045 its reverse (540133), we get a palindrome (871178).

The spelling of 331045 in words is "three hundred thirty-one thousand, forty-five".