Base | Representation |
---|---|
bin | 11011111101111111… |
… | …010010010011010101 |
3 | 2212111220200100210102 |
4 | 123331333102103111 |
5 | 443000420420321 |
6 | 21443541103445 |
7 | 2112124352516 |
oct | 337577222325 |
9 | 85456610712 |
10 | 30031029461 |
11 | 11810807a14 |
12 | 59a13b7b85 |
13 | 2aa793a824 |
14 | 164c604a0d |
15 | bab707c0b |
hex | 6fdfd24d5 |
30031029461 has 2 divisors, whose sum is σ = 30031029462. Its totient is φ = 30031029460.
The previous prime is 30031029451. The next prime is 30031029467. The reversal of 30031029461 is 16492013003.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 30017295025 + 13734436 = 173255^2 + 3706^2 .
It is an emirp because it is prime and its reverse (16492013003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30031029461 - 210 = 30031028437 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30031029467) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15015514730 + 15015514731.
It is an arithmetic number, because the mean of its divisors is an integer number (15015514731).
Almost surely, 230031029461 is an apocalyptic number.
It is an amenable number.
30031029461 is a deficient number, since it is larger than the sum of its proper divisors (1).
30031029461 is an equidigital number, since it uses as much as digits as its factorization.
30031029461 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 3888, while the sum is 29.
The spelling of 30031029461 in words is "thirty billion, thirty-one million, twenty-nine thousand, four hundred sixty-one".
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