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309001 = 7114013
BaseRepresentation
bin1001011011100001001
3120200212111
41023130021
534342001
610342321
72424610
oct1133411
9520774
10309001
111a1180
1212a9a1
13aa854
1480877
1561851
hex4b709

309001 has 8 divisors (see below), whose sum is σ = 385344. Its totient is φ = 240720.

The previous prime is 308999. The next prime is 309007. The reversal of 309001 is 100903.

Adding to 309001 its reverse (100903), we get a palindrome (409904).

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 309001 - 21 = 308999 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (309007) 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, 1930 + ... + 2083.

It is an arithmetic number, because the mean of its divisors is an integer number (48168).

2309001 is an apocalyptic number.

It is an amenable number.

309001 is a deficient number, since it is larger than the sum of its proper divisors (76343).

309001 is a wasteful number, since it uses less digits than its factorization.

309001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 309001 is about 555.8785838652. The cubic root of 309001 is about 67.6062159474.

The spelling of 309001 in words is "three hundred nine thousand, one".

Divisors: 1 7 11 77 4013 28091 44143 309001