Base | Representation |
---|---|
bin | 1111100001011… |
… | …10010101100101 |
3 | 100002000111221220 |
4 | 13300232111211 |
5 | 231313310341 |
6 | 20530530553 |
7 | 3140536245 |
oct | 760562545 |
9 | 302014856 |
10 | 130213221 |
11 | 67558136 |
12 | 37736a59 |
13 | 20c91858 |
14 | 13417b25 |
15 | b671a66 |
hex | 7c2e565 |
130213221 has 8 divisors (see below), whose sum is σ = 174056544. Its totient is φ = 86589360.
The previous prime is 130213211. The next prime is 130213231. The reversal of 130213221 is 122312031.
It is an interprime number because it is at equal distance from previous prime (130213211) and next prime (130213231).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 130213221 - 211 = 130211173 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 130213221.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130213201) 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, 53475 + ... + 55856.
It is an arithmetic number, because the mean of its divisors is an integer number (21757068).
Almost surely, 2130213221 is an apocalyptic number.
It is an amenable number.
130213221 is a deficient number, since it is larger than the sum of its proper divisors (43843323).
130213221 is a wasteful number, since it uses less digits than its factorization.
130213221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 109731.
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 130213221 is about 11411.1007795041. The cubic root of 130213221 is about 506.8565081440.
Adding to 130213221 its reverse (122312031), we get a palindrome (252525252).
The spelling of 130213221 in words is "one hundred thirty million, two hundred thirteen thousand, two hundred twenty-one".
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