Base | Representation |
---|---|
bin | 10110101110011110… |
… | …01111001001010111 |
3 | 1011111022101112222120 |
4 | 23113033033021113 |
5 | 144441430431411 |
6 | 5334410231023 |
7 | 611232021465 |
oct | 132717171127 |
9 | 34438345876 |
10 | 12201030231 |
11 | 51a1188665 |
12 | 2446125473 |
13 | 11c59bca20 |
14 | 83a5cb835 |
15 | 4b6230106 |
hex | 2d73cf257 |
12201030231 has 8 divisors (see below), whose sum is σ = 17519428080. Its totient is φ = 7508326272.
The previous prime is 12201030209. The next prime is 12201030239. The reversal of 12201030231 is 13203010221.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 12201030231 - 25 = 12201030199 is a prime.
It is a super-2 number, since 2×122010302312 (a number of 21 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 12201030231.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12201030239) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156423426 + ... + 156423503.
It is an arithmetic number, because the mean of its divisors is an integer number (2189928510).
Almost surely, 212201030231 is an apocalyptic number.
12201030231 is a deficient number, since it is larger than the sum of its proper divisors (5318397849).
12201030231 is a wasteful number, since it uses less digits than its factorization.
12201030231 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 312846945.
The product of its (nonzero) digits is 72, while the sum is 15.
Adding to 12201030231 its reverse (13203010221), we get a palindrome (25404040452).
The spelling of 12201030231 in words is "twelve billion, two hundred one million, thirty thousand, two hundred thirty-one".
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