Base | Representation |
---|---|
bin | 111001110110… |
… | …1000101101001 |
3 | 2010001222122022 |
4 | 1303231011221 |
5 | 30231044431 |
6 | 3002034225 |
7 | 515545163 |
oct | 163550551 |
9 | 63058568 |
10 | 30331241 |
11 | 16137346 |
12 | a1a8975 |
13 | 638c9a5 |
14 | 4057933 |
15 | 29e207b |
hex | 1ced169 |
30331241 has 8 divisors (see below), whose sum is σ = 30630600. Its totient is φ = 30033792.
The previous prime is 30331207. The next prime is 30331243. The reversal of 30331241 is 14213303.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 4116841 + 26214400 = 2029^2 + 5120^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30331241 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30331243) 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, 81131 + ... + 81503.
It is an arithmetic number, because the mean of its divisors is an integer number (3828825).
Almost surely, 230331241 is an apocalyptic number.
It is an amenable number.
30331241 is a deficient number, since it is larger than the sum of its proper divisors (299359).
30331241 is a wasteful number, since it uses less digits than its factorization.
30331241 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 955.
The product of its (nonzero) digits is 216, while the sum is 17.
The square root of 30331241 is about 5507.3805933493. The cubic root of 30331241 is about 311.8626703586.
Adding to 30331241 its reverse (14213303), we get a palindrome (44544544).
The spelling of 30331241 in words is "thirty million, three hundred thirty-one thousand, two hundred forty-one".
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