Base | Representation |
---|---|
bin | 1111100001100… |
… | …10011111101011 |
3 | 100002001101022122 |
4 | 13300302133223 |
5 | 231314332001 |
6 | 20531141455 |
7 | 3140640014 |
oct | 760623753 |
9 | 302041278 |
10 | 130230251 |
11 | 67569a08 |
12 | 3774488b |
13 | 20c99528 |
14 | 1342000b |
15 | b676b1b |
hex | 7c327eb |
130230251 has 4 divisors (see below), whose sum is σ = 137890872. Its totient is φ = 122569632.
The previous prime is 130230241. The next prime is 130230277. The reversal of 130230251 is 152032031.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 130230251 - 218 = 129968107 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 7660603 = 130230251 / (1 + 3 + 0 + 2 + 3 + 0 + 2 + 5 + 1).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130230241) 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 in 3 ways as a sum of consecutive naturals, for example, 3830285 + ... + 3830318.
It is an arithmetic number, because the mean of its divisors is an integer number (34472718).
Almost surely, 2130230251 is an apocalyptic number.
130230251 is a deficient number, since it is larger than the sum of its proper divisors (7660621).
130230251 is an equidigital number, since it uses as much as digits as its factorization.
130230251 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7660620.
The product of its (nonzero) digits is 180, while the sum is 17.
The square root of 130230251 is about 11411.8469583149. The cubic root of 130230251 is about 506.8786036731.
Adding to 130230251 its reverse (152032031), we get a palindrome (282262282).
The spelling of 130230251 in words is "one hundred thirty million, two hundred thirty thousand, two hundred fifty-one".
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