Base | Representation |
---|---|
bin | 1101011101101010101… |
… | …1001110011101101100 |
3 | 211010000211120121220202 |
4 | 3113122223032131230 |
5 | 12242201304444322 |
6 | 254131513133032 |
7 | 22465610553140 |
oct | 3273253163554 |
9 | 733024517822 |
10 | 231302031212 |
11 | 8a104a6a58a |
12 | 389b26ba178 |
13 | 18a72380935 |
14 | b2a3419220 |
15 | 603b540292 |
hex | 35daace76c |
231302031212 has 48 divisors (see below), whose sum is σ = 489897253440. Its totient is φ = 93282834432.
The previous prime is 231302031187. The next prime is 231302031239. The reversal of 231302031212 is 212130203132.
231302031212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is an unprimeable number.
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 15 ways as a sum of consecutive naturals, for example, 3089858 + ... + 3163830.
It is an arithmetic number, because the mean of its divisors is an integer number (10206192780).
Almost surely, 2231302031212 is an apocalyptic number.
It is an amenable number.
231302031212 is an abundant number, since it is smaller than the sum of its proper divisors (258595222228).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
231302031212 is a wasteful number, since it uses less digits than its factorization.
231302031212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 80570 (or 80568 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 20.
Adding to 231302031212 its reverse (212130203132), we get a palindrome (443432234344).
The spelling of 231302031212 in words is "two hundred thirty-one billion, three hundred two million, thirty-one thousand, two hundred twelve".
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