Base | Representation |
---|---|
bin | 111001111000… |
… | …1001101100011 |
3 | 2010002211210212 |
4 | 1303301031203 |
5 | 30232120011 |
6 | 3002244335 |
7 | 515645342 |
oct | 163611543 |
9 | 63084725 |
10 | 30348131 |
11 | 16149000 |
12 | a1b66ab |
13 | 6397598 |
14 | 405db59 |
15 | 29e708b |
hex | 1cf1363 |
30348131 has 12 divisors (see below), whose sum is σ = 33603192. Its totient is φ = 27406500.
The previous prime is 30348127. The next prime is 30348133. The reversal of 30348131 is 13184303.
It is a happy number.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It is not a de Polignac number, because 30348131 - 22 = 30348127 is a prime.
It is a super-2 number, since 2×303481312 = 1842018110386322, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30348097 and 30348106.
It is not an unprimeable number, because it can be changed into a prime (30348133) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200906 + ... + 201056.
It is an arithmetic number, because the mean of its divisors is an integer number (2800266).
Almost surely, 230348131 is an apocalyptic number.
30348131 is a deficient number, since it is larger than the sum of its proper divisors (3255061).
30348131 is an frugal number, since it uses more digits than its factorization.
30348131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 335 (or 162 counting only the distinct ones).
The product of its (nonzero) digits is 864, while the sum is 23.
The square root of 30348131 is about 5508.9137767803. The cubic root of 30348131 is about 311.9205466925.
The spelling of 30348131 in words is "thirty million, three hundred forty-eight thousand, one hundred thirty-one".
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