Base | Representation |
---|---|
bin | 11100001001111010… |
… | …100111100000110101 |
3 | 2220000212012122011110 |
4 | 130021322213200311 |
5 | 443403132212323 |
6 | 21515450025233 |
7 | 2120104245462 |
oct | 341172474065 |
9 | 86025178143 |
10 | 30231132213 |
11 | 11903760097 |
12 | 5a38418219 |
13 | 2b0a22c819 |
14 | 166b012669 |
15 | bbe082793 |
hex | 709ea7835 |
30231132213 has 16 divisors (see below), whose sum is σ = 41942520576. Its totient is φ = 19353097920.
The previous prime is 30231132187. The next prime is 30231132221. The reversal of 30231132213 is 31223113203.
It is not a de Polignac number, because 30231132213 - 212 = 30231128117 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 30231132213.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30231132293) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2015218 + ... + 2030163.
It is an arithmetic number, because the mean of its divisors is an integer number (2621407536).
Almost surely, 230231132213 is an apocalyptic number.
It is an amenable number.
30231132213 is a deficient number, since it is larger than the sum of its proper divisors (11711388363).
30231132213 is a wasteful number, since it uses less digits than its factorization.
30231132213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4045484.
The product of its (nonzero) digits is 648, while the sum is 21.
Adding to 30231132213 its reverse (31223113203), we get a palindrome (61454245416).
The spelling of 30231132213 in words is "thirty billion, two hundred thirty-one million, one hundred thirty-two thousand, two hundred thirteen".
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