Base | Representation |
---|---|
bin | 11100011011011100… |
… | …100011111101011111 |
3 | 2220210100122000122010 |
4 | 130123130203331133 |
5 | 1000003430240411 |
6 | 22004553522303 |
7 | 2130305200140 |
oct | 343334437537 |
9 | 86710560563 |
10 | 30525243231 |
11 | 11a4478204a |
12 | 5abaa13393 |
13 | 2b56148002 |
14 | 16980d1ac7 |
15 | bd9ccb7a6 |
hex | 71b723f5f |
30525243231 has 96 divisors (see below), whose sum is σ = 52547397120. Its totient is φ = 15393024000.
The previous prime is 30525243223. The next prime is 30525243233. The reversal of 30525243231 is 13234252503.
It is not a de Polignac number, because 30525243231 - 23 = 30525243223 is a prime.
It is a super-3 number, since 3×305252432313 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30525243233) 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 in 95 ways as a sum of consecutive naturals, for example, 11645101 + ... + 11647721.
It is an arithmetic number, because the mean of its divisors is an integer number (547368720).
Almost surely, 230525243231 is an apocalyptic number.
30525243231 is a deficient number, since it is larger than the sum of its proper divisors (22022153889).
30525243231 is a wasteful number, since it uses less digits than its factorization.
30525243231 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2785 (or 2768 counting only the distinct ones).
The product of its (nonzero) digits is 21600, while the sum is 30.
Adding to 30525243231 its reverse (13234252503), we get a palindrome (43759495734).
The spelling of 30525243231 in words is "thirty billion, five hundred twenty-five million, two hundred forty-three thousand, two hundred thirty-one".
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