Base | Representation |
---|---|
bin | 11100001000001111… |
… | …110101110100101101 |
3 | 2212221220112120000110 |
4 | 130020033311310231 |
5 | 443324001011141 |
6 | 21513010050233 |
7 | 2116314315615 |
oct | 341017656455 |
9 | 85856476013 |
10 | 30203141421 |
11 | 11899982202 |
12 | 5a2ab79979 |
13 | 2b044ac21b |
14 | 1667407a45 |
15 | bbb8a3e16 |
hex | 7083f5d2d |
30203141421 has 4 divisors (see below), whose sum is σ = 40270855232. Its totient is φ = 20135427612.
The previous prime is 30203141389. The next prime is 30203141431. The reversal of 30203141421 is 12414130203.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is not a de Polignac number, because 30203141421 - 25 = 30203141389 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 (30203141431) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5033856901 + ... + 5033856906.
It is an arithmetic number, because the mean of its divisors is an integer number (10067713808).
Almost surely, 230203141421 is an apocalyptic number.
It is an amenable number.
30203141421 is a deficient number, since it is larger than the sum of its proper divisors (10067713811).
30203141421 is a wasteful number, since it uses less digits than its factorization.
30203141421 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10067713810.
The product of its (nonzero) digits is 576, while the sum is 21.
Adding to 30203141421 its reverse (12414130203), we get a palindrome (42617271624).
The spelling of 30203141421 in words is "thirty billion, two hundred three million, one hundred forty-one thousand, four hundred twenty-one".
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