Base | Representation |
---|---|
bin | 11100101011111000… |
… | …100000011110111101 |
3 | 2221111120112010221121 |
4 | 130223320200132331 |
5 | 1001040024120402 |
6 | 22052204230541 |
7 | 2140164134605 |
oct | 345370403675 |
9 | 87446463847 |
10 | 30801004477 |
11 | 12076400601 |
12 | 5b7723b451 |
13 | 2b9b30a249 |
14 | 16c2995c05 |
15 | c040ed837 |
hex | 72be207bd |
30801004477 has 2 divisors, whose sum is σ = 30801004478. Its totient is φ = 30801004476.
The previous prime is 30801004471. The next prime is 30801004489. The reversal of 30801004477 is 77440010803.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 28308399001 + 2492605476 = 168251^2 + 49926^2 .
It is an emirp because it is prime and its reverse (77440010803) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30801004477 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30801004471) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15400502238 + 15400502239.
It is an arithmetic number, because the mean of its divisors is an integer number (15400502239).
Almost surely, 230801004477 is an apocalyptic number.
It is an amenable number.
30801004477 is a deficient number, since it is larger than the sum of its proper divisors (1).
30801004477 is an equidigital number, since it uses as much as digits as its factorization.
30801004477 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 18816, while the sum is 34.
The spelling of 30801004477 in words is "thirty billion, eight hundred one million, four thousand, four hundred seventy-seven".
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