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304106331 = 3157645661
BaseRepresentation
bin10010001000000…
…100101101011011
3210012020012110110
4102020010231123
51110322400311
650102015403
710351601244
oct2210045533
9705205413
10304106331
11146729651
1285a17563
134b007b99
142c561ccb
151ba708a6
hex12204b5b

304106331 has 8 divisors (see below), whose sum is σ = 408058384. Its totient is φ = 201445920.

The previous prime is 304106321. The next prime is 304106333. The reversal of 304106331 is 133601403.

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

It is not a de Polignac number, because 304106331 - 27 = 304106203 is a prime.

It is a super-2 number, since 2×3041063312 = 184961321108563122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304106298 and 304106307.

It is not an unprimeable number, because it can be changed into a prime (304106333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322360 + ... + 323301.

It is an arithmetic number, because the mean of its divisors is an integer number (51007298).

Almost surely, 2304106331 is an apocalyptic number.

304106331 is a deficient number, since it is larger than the sum of its proper divisors (103952053).

304106331 is a wasteful number, since it uses less digits than its factorization.

304106331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645821.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 304106331 is about 17438.6447581227. The cubic root of 304106331 is about 672.4734674422.

Adding to 304106331 its reverse (133601403), we get a palindrome (437707734).

The spelling of 304106331 in words is "three hundred four million, one hundred six thousand, three hundred thirty-one".

Divisors: 1 3 157 471 645661 1936983 101368777 304106331