Base | Representation |
---|---|
bin | 1111100011110… |
… | …11111110101001 |
3 | 100002121200012102 |
4 | 13301323332221 |
5 | 231403444431 |
6 | 20541423145 |
7 | 3143332361 |
oct | 761737651 |
9 | 302550172 |
10 | 130531241 |
11 | 67755065 |
12 | 3786aab5 |
13 | 21073529 |
14 | 1349b9a1 |
15 | b6d5dcb |
hex | 7c7bfa9 |
130531241 has 4 divisors (see below), whose sum is σ = 130679952. Its totient is φ = 130382532.
The previous prime is 130531223. The next prime is 130531283. The reversal of 130531241 is 142135031.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142135031 = 31 ⋅4585001.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-130531241 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130531201) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73031 + ... + 74796.
It is an arithmetic number, because the mean of its divisors is an integer number (32669988).
Almost surely, 2130531241 is an apocalyptic number.
It is an amenable number.
130531241 is a deficient number, since it is larger than the sum of its proper divisors (148711).
130531241 is an equidigital number, since it uses as much as digits as its factorization.
130531241 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 148710.
The product of its (nonzero) digits is 360, while the sum is 20.
The square root of 130531241 is about 11425.0269583927. The cubic root of 130531241 is about 507.2688048830.
Adding to 130531241 its reverse (142135031), we get a palindrome (272666272).
The spelling of 130531241 in words is "one hundred thirty million, five hundred thirty-one thousand, two hundred forty-one".
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