331341005 has 4 divisors (see below), whose sum is σ = 397609212. Its totient is φ = 265072800.

The previous prime is 331340983. The next prime is 331341007. The reversal of 331341005 is 500143133.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 154902916 + 176438089 = 12446^2 + 13283^2 .

It is not a de Polignac number, because 331341005 - 2²⁰ = 330292429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331341007) 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, 33134096 + ... + 33134105.

It is an arithmetic number, because the mean of its divisors is an integer number (99402303).

Almost surely, 2^331341005 is an apocalyptic number.

It is an amenable number.

331341005 is a deficient number, since it is larger than the sum of its proper divisors (66268207).

331341005 is an equidigital number, since it uses as much as digits as its factorization.

331341005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66268206.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 331341005 is about 18202.7746511349. The cubic root of 331341005 is about 691.9771096541.

Adding to 331341005 its reverse (500143133), we get a palindrome (831484138).

The spelling of 331341005 in words is "three hundred thirty-one million, three hundred forty-one thousand, five".