Base | Representation |
---|---|
bin | 111001111111… |
… | …0111000100011 |
3 | 2010012200121221 |
4 | 1303332320203 |
5 | 30240413011 |
6 | 3003355511 |
7 | 516300532 |
oct | 163767043 |
9 | 63180557 |
10 | 30404131 |
11 | 1618708a |
12 | a222b97 |
13 | 63b6c14 |
14 | 4076319 |
15 | 2a08971 |
hex | 1cfee23 |
30404131 has 8 divisors (see below), whose sum is σ = 31170384. Its totient is φ = 29647200.
The previous prime is 30404111. The next prime is 30404167. The reversal of 30404131 is 13140403.
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 30404131 - 29 = 30403619 is a prime.
It is a super-2 number, since 2×304041312 = 1848822363730322, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30404111) 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, 4521 + ... + 9013.
It is an arithmetic number, because the mean of its divisors is an integer number (3896298).
Almost surely, 230404131 is an apocalyptic number.
30404131 is a deficient number, since it is larger than the sum of its proper divisors (766253).
30404131 is a wasteful number, since it uses less digits than its factorization.
30404131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4661.
The product of its (nonzero) digits is 144, while the sum is 16.
The square root of 30404131 is about 5513.9941059091. The cubic root of 30404131 is about 312.1122863155.
Adding to 30404131 its reverse (13140403), we get a palindrome (43544534).
The spelling of 30404131 in words is "thirty million, four hundred four thousand, one hundred thirty-one".
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