Base | Representation |
---|---|
bin | 11011111110101110… |
… | …100011010101111111 |
3 | 2212112202222212110102 |
4 | 123332232203111333 |
5 | 443012103420111 |
6 | 21445102431315 |
7 | 2112334566602 |
oct | 337656432577 |
9 | 85482885412 |
10 | 30043420031 |
11 | 11817800159 |
12 | 59a559253b |
13 | 2aaa388521 |
14 | 165010c339 |
15 | bac85413b |
hex | 6feba357f |
30043420031 has 8 divisors (see below), whose sum is σ = 30982953600. Its totient is φ = 29118230680.
The previous prime is 30043420009. The next prime is 30043420049. The reversal of 30043420031 is 13002434003.
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 30043420031 - 230 = 28969678207 is a prime.
It is a super-2 number, since 2×300434200312 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30043419985 and 30043420012.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30043420081) 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, 3581801 + ... + 3590178.
It is an arithmetic number, because the mean of its divisors is an integer number (3872869200).
Almost surely, 230043420031 is an apocalyptic number.
30043420031 is a deficient number, since it is larger than the sum of its proper divisors (939533569).
30043420031 is an equidigital number, since it uses as much as digits as its factorization.
30043420031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7172109.
The product of its (nonzero) digits is 864, while the sum is 20.
Adding to 30043420031 its reverse (13002434003), we get a palindrome (43045854034).
The spelling of 30043420031 in words is "thirty billion, forty-three million, four hundred twenty thousand, thirty-one".
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