Base | Representation |
---|---|
bin | 11100011000001110… |
… | …001110000100011101 |
3 | 2220122120211220021112 |
4 | 130120032032010131 |
5 | 444401103330101 |
6 | 21555342311405 |
7 | 2126050342361 |
oct | 343016160435 |
9 | 86576756245 |
10 | 30471151901 |
11 | 11a17197473 |
12 | 5aa4888565 |
13 | 2b47b895c8 |
14 | 1690c512a1 |
15 | bd51946bb |
hex | 71838e11d |
30471151901 has 4 divisors (see below), whose sum is σ = 30483637404. Its totient is φ = 30458666400.
The previous prime is 30471151897. The next prime is 30471151927. The reversal of 30471151901 is 10915117403.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 12171826276 + 18299325625 = 110326^2 + 135275^2 .
It is a cyclic number.
It is not a de Polignac number, because 30471151901 - 22 = 30471151897 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30471151961) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6239090 + ... + 6243971.
It is an arithmetic number, because the mean of its divisors is an integer number (7620909351).
Almost surely, 230471151901 is an apocalyptic number.
It is an amenable number.
30471151901 is a deficient number, since it is larger than the sum of its proper divisors (12485503).
30471151901 is a wasteful number, since it uses less digits than its factorization.
30471151901 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12485502.
The product of its (nonzero) digits is 3780, while the sum is 32.
The spelling of 30471151901 in words is "thirty billion, four hundred seventy-one million, one hundred fifty-one thousand, nine hundred one".
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