331820005 has 8 divisors (see below), whose sum is σ = 434382624. Its totient is φ = 241323600.

The previous prime is 331819993. The next prime is 331820023. The reversal of 331820005 is 500028133.

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

It is not a de Polignac number, because 331820005 - 2¹³ = 331811813 is a prime.

It is a super-2 number, since 2×331820005² = 220209031436400050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3016491 + ... + 3016600.

It is an arithmetic number, because the mean of its divisors is an integer number (54297828).

Almost surely, 2^331820005 is an apocalyptic number.

It is an amenable number.

331820005 is a deficient number, since it is larger than the sum of its proper divisors (102562619).

331820005 is a wasteful number, since it uses less digits than its factorization.

331820005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033107.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 331820005 is about 18215.9272341542. The cubic root of 331820005 is about 692.3103991616.

Adding to 331820005 its reverse (500028133), we get a palindrome (831848138).

The spelling of 331820005 in words is "three hundred thirty-one million, eight hundred twenty thousand, five".