Base | Representation |
---|---|
bin | 11100001001111110… |
… | …011011000111101111 |
3 | 2220000221002022220200 |
4 | 130021332123013233 |
5 | 443403411130111 |
6 | 21515523244543 |
7 | 2120115602535 |
oct | 341176330757 |
9 | 86027068820 |
10 | 30232130031 |
11 | 11904281834 |
12 | 5a38819753 |
13 | 2b0a4bba4c |
14 | 166b1d2155 |
15 | bbe1cd256 |
hex | 709f9b1ef |
30232130031 has 12 divisors (see below), whose sum is σ = 45077298240. Its totient is φ = 19504599840.
The previous prime is 30232130021. The next prime is 30232130039. The reversal of 30232130031 is 13003123203.
30232130031 is a `hidden beast` number, since 302 + 32 + 1 + 300 + 31 = 666.
It is not a de Polignac number, because 30232130031 - 29 = 30232129519 is a prime.
It is a super-2 number, since 2×302321300312 (a number of 22 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 30232129986 and 30232130013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30232130039) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54179166 + ... + 54179723.
It is an arithmetic number, because the mean of its divisors is an integer number (3756441520).
Almost surely, 230232130031 is an apocalyptic number.
30232130031 is a gapful number since it is divisible by the number (31) formed by its first and last digit.
30232130031 is a deficient number, since it is larger than the sum of its proper divisors (14845168209).
30232130031 is a wasteful number, since it uses less digits than its factorization.
30232130031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 108358926 (or 108358923 counting only the distinct ones).
The product of its (nonzero) digits is 324, while the sum is 18.
Adding to 30232130031 its reverse (13003123203), we get a palindrome (43235253234).
The spelling of 30232130031 in words is "thirty billion, two hundred thirty-two million, one hundred thirty thousand, thirty-one".
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