Base | Representation |
---|---|
bin | 10010101111011011… |
… | …111101101000001101 |
3 | 1220221102101002202022 |
4 | 102233123331220031 |
5 | 312203020243201 |
6 | 13124450135525 |
7 | 1311446324303 |
oct | 225733755015 |
9 | 56842332668 |
10 | 20123212301 |
11 | 8597035275 |
12 | 3a972815a5 |
13 | 1b89087a1a |
14 | d8c7da273 |
15 | 7cb9a841b |
hex | 4af6fda0d |
20123212301 has 8 divisors (see below), whose sum is σ = 20357438400. Its totient is φ = 19889166880.
The previous prime is 20123212289. The next prime is 20123212327. The reversal of 20123212301 is 10321232102.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20123212301 - 226 = 20056103437 is a prime.
It is a super-2 number, since 2×201232123012 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 20123212301.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20123211301) 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, 185696 + ... + 273366.
It is an arithmetic number, because the mean of its divisors is an integer number (2544679800).
Almost surely, 220123212301 is an apocalyptic number.
It is an amenable number.
20123212301 is a deficient number, since it is larger than the sum of its proper divisors (234226099).
20123212301 is an equidigital number, since it uses as much as digits as its factorization.
20123212301 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 90339.
The product of its (nonzero) digits is 144, while the sum is 17.
Adding to 20123212301 its reverse (10321232102), we get a palindrome (30444444403).
It can be divided in two parts, 20 and 123212301, that added together give a palindrome (123212321).
The spelling of 20123212301 in words is "twenty billion, one hundred twenty-three million, two hundred twelve thousand, three hundred one".
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