Base | Representation |
---|---|
bin | 11100001001111011… |
… | …101001111101111100 |
3 | 2220000212201110112220 |
4 | 130021323221331330 |
5 | 443403214420122 |
6 | 21515455525340 |
7 | 2120106461166 |
oct | 341173517574 |
9 | 86025643486 |
10 | 30231404412 |
11 | 11903926650 |
12 | 5a38529850 |
13 | 2b0a2c66a1 |
14 | 166b083936 |
15 | bbe0d825c |
hex | 709ee9f7c |
30231404412 has 96 divisors (see below), whose sum is σ = 81519809280. Its totient is φ = 8623480320.
The previous prime is 30231404381. The next prime is 30231404417. The reversal of 30231404412 is 21440413203.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30231404417) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355368 + ... + 432144.
It is an arithmetic number, because the mean of its divisors is an integer number (849164680).
Almost surely, 230231404412 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30231404412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40759904640).
30231404412 is an abundant number, since it is smaller than the sum of its proper divisors (51288404868).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30231404412 is a wasteful number, since it uses less digits than its factorization.
30231404412 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 76971 (or 76969 counting only the distinct ones).
The product of its (nonzero) digits is 2304, while the sum is 24.
Adding to 30231404412 its reverse (21440413203), we get a palindrome (51671817615).
The spelling of 30231404412 in words is "thirty billion, two hundred thirty-one million, four hundred four thousand, four hundred twelve".
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