Base | Representation |
---|---|
bin | 11011111101010110… |
… | …100001101001100111 |
3 | 2212111011120111200021 |
4 | 123331112201221213 |
5 | 442440202010143 |
6 | 21442520100011 |
7 | 2111634501016 |
oct | 337526415147 |
9 | 85434514607 |
10 | 30020344423 |
11 | 1180577a103 |
12 | 5999904607 |
13 | 2aa5669214 |
14 | 164b022a7d |
15 | baa7e6ced |
hex | 6fd5a1a67 |
30020344423 has 4 divisors (see below), whose sum is σ = 30529163880. Its totient is φ = 29511524968.
The previous prime is 30020344411. The next prime is 30020344427. The reversal of 30020344423 is 32444302003.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32444302003 = 29483 ⋅1100441.
It is a cyclic number.
It is not a de Polignac number, because 30020344423 - 25 = 30020344391 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30020344427) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254409640 + ... + 254409757.
It is an arithmetic number, because the mean of its divisors is an integer number (7632290970).
Almost surely, 230020344423 is an apocalyptic number.
30020344423 is a deficient number, since it is larger than the sum of its proper divisors (508819457).
30020344423 is an equidigital number, since it uses as much as digits as its factorization.
30020344423 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 508819456.
The product of its (nonzero) digits is 6912, while the sum is 25.
Adding to 30020344423 its reverse (32444302003), we get a palindrome (62464646426).
The spelling of 30020344423 in words is "thirty billion, twenty million, three hundred forty-four thousand, four hundred twenty-three".
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