Base | Representation |
---|---|
bin | 1111100001011… |
… | …10010101101111 |
3 | 100002000111222021 |
4 | 13300232111233 |
5 | 231313310411 |
6 | 20530531011 |
7 | 3140536261 |
oct | 760562557 |
9 | 302014867 |
10 | 130213231 |
11 | 67558145 |
12 | 37736a67 |
13 | 20c91865 |
14 | 13417b31 |
15 | b671a71 |
hex | 7c2e56f |
130213231 has 2 divisors, whose sum is σ = 130213232. Its totient is φ = 130213230.
The previous prime is 130213211. The next prime is 130213241. The reversal of 130213231 is 132312031.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 130213231 - 25 = 130213199 is a prime.
It is a super-2 number, since 2×1302132312 = 33910971054918722, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130213201) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65106615 + 65106616.
It is an arithmetic number, because the mean of its divisors is an integer number (65106616).
Almost surely, 2130213231 is an apocalyptic number.
130213231 is a deficient number, since it is larger than the sum of its proper divisors (1).
130213231 is an equidigital number, since it uses as much as digits as its factorization.
130213231 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 108, while the sum is 16.
The square root of 130213231 is about 11411.1012176740. The cubic root of 130213231 is about 506.8565211190.
Adding to 130213231 its reverse (132312031), we get a palindrome (262525262).
The spelling of 130213231 in words is "one hundred thirty million, two hundred thirteen thousand, two hundred thirty-one".
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