331404331 has 8 divisors (see below), whose sum is σ = 336110400. Its totient is φ = 326726400.

The previous prime is 331404329. The next prime is 331404343. The reversal of 331404331 is 133404133.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 331404331 - 2¹ = 331404329 is a prime.

It is a super-2 number, since 2×331404331² = 219657661211115122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331404361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17275 + ... + 31003.

It is an arithmetic number, because the mean of its divisors is an integer number (42013800).

Almost surely, 2^331404331 is an apocalyptic number.

331404331 is a deficient number, since it is larger than the sum of its proper divisors (4706069).

331404331 is a wasteful number, since it uses less digits than its factorization.

331404331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14069.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 331404331 is about 18204.5140281195. The cubic root of 331404331 is about 692.0211904756.

Adding to 331404331 its reverse (133404133), we get a palindrome (464808464).

The spelling of 331404331 in words is "three hundred thirty-one million, four hundred four thousand, three hundred thirty-one".