Base | Representation |
---|---|
bin | 11100001001111011… |
… | …010000110000001011 |
3 | 2220000212112012212200 |
4 | 130021323100300023 |
5 | 443403203114011 |
6 | 21515453411243 |
7 | 2120105551113 |
oct | 341173206013 |
9 | 86025465780 |
10 | 30231301131 |
11 | 11903865a99 |
12 | 5a38499b23 |
13 | 2b0a28b685 |
14 | 166b058043 |
15 | bbe0b7856 |
hex | 709ed0c0b |
30231301131 has 24 divisors (see below), whose sum is σ = 46535523840. Its totient is φ = 18867756336.
The previous prime is 30231301123. The next prime is 30231301151. The reversal of 30231301131 is 13110313203.
It is a happy number.
30231301131 is a `hidden beast` number, since 3 + 0 + 231 + 301 + 131 = 666.
It is not a de Polignac number, because 30231301131 - 23 = 30231301123 is a prime.
It is a super-2 number, since 2×302313011312 (a number of 22 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (30231301151) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1543941 + ... + 1563398.
It is an arithmetic number, because the mean of its divisors is an integer number (1938980160).
Almost surely, 230231301131 is an apocalyptic number.
30231301131 is a deficient number, since it is larger than the sum of its proper divisors (16304222709).
30231301131 is a wasteful number, since it uses less digits than its factorization.
30231301131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3107415 (or 3107412 counting only the distinct ones).
The product of its (nonzero) digits is 162, while the sum is 18.
Adding to 30231301131 its reverse (13110313203), we get a palindrome (43341614334).
The spelling of 30231301131 in words is "thirty billion, two hundred thirty-one million, three hundred one thousand, one hundred thirty-one".
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