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30221311309 = 714892899483
BaseRepresentation
bin11100001001010101…
…001001110101001101
32220000011201200102021
4130021111021311031
5443343123430214
621514455330141
72116624623220
oct341125116515
986004650367
1030221311309
11118a9162542
125a35080951
132b081a1637
1416699b75b7
15bbd292924
hex709549d4d

30221311309 has 8 divisors (see below), whose sum is σ = 34561849280. Its totient is φ = 25886575296.

The previous prime is 30221311297. The next prime is 30221311331. The reversal of 30221311309 is 90311312203.

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 30221311309 - 25 = 30221311277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221311369) by changing a digit.

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, 1439319 + ... + 1460164.

It is an arithmetic number, because the mean of its divisors is an integer number (4320231160).

Almost surely, 230221311309 is an apocalyptic number.

It is an amenable number.

30221311309 is a deficient number, since it is larger than the sum of its proper divisors (4340537971).

30221311309 is a wasteful number, since it uses less digits than its factorization.

30221311309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900979.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 30221311309 in words is "thirty billion, two hundred twenty-one million, three hundred eleven thousand, three hundred nine".

Divisors: 1 7 1489 10423 2899483 20296381 4317330187 30221311309