Base | Representation |
---|---|
bin | 11100010100000010… |
… | …101110100010010011 |
3 | 2220110200220100111212 |
4 | 130110002232202103 |
5 | 444230130432131 |
6 | 21544355330335 |
7 | 2124236331242 |
oct | 342402564223 |
9 | 86420810455 |
10 | 30401030291 |
11 | 11990653025 |
12 | 5a852b09ab |
13 | 2b364a7628 |
14 | 16857da959 |
15 | bcde42a2b |
hex | 7140ae893 |
30401030291 has 2 divisors, whose sum is σ = 30401030292. Its totient is φ = 30401030290.
The previous prime is 30401030269. The next prime is 30401030311. The reversal of 30401030291 is 19203010403.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30401030291 is a prime.
It is not a weakly prime, because it can be changed into another prime (30401030221) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15200515145 + 15200515146.
It is an arithmetic number, because the mean of its divisors is an integer number (15200515146).
Almost surely, 230401030291 is an apocalyptic number.
30401030291 is a deficient number, since it is larger than the sum of its proper divisors (1).
30401030291 is an equidigital number, since it uses as much as digits as its factorization.
30401030291 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 648, while the sum is 23.
Adding to 30401030291 its reverse (19203010403), we get a palindrome (49604040694).
The spelling of 30401030291 in words is "thirty billion, four hundred one million, thirty thousand, two hundred ninety-one".
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