Base | Representation |
---|---|
bin | 1111100010101… |
… | …00111110110101 |
3 | 100002022120002102 |
4 | 13301110332311 |
5 | 231333342014 |
6 | 20534151445 |
7 | 3142065602 |
oct | 761247665 |
9 | 302276072 |
10 | 130371509 |
11 | 67656054 |
12 | 377b2585 |
13 | 21018908 |
14 | 134596a9 |
15 | b6a38de |
hex | 7c54fb5 |
130371509 has 2 divisors, whose sum is σ = 130371510. Its totient is φ = 130371508.
The previous prime is 130371499. The next prime is 130371539. The reversal of 130371509 is 905173031.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 120780100 + 9591409 = 10990^2 + 3097^2 .
It is a cyclic number.
It is not a de Polignac number, because 130371509 - 28 = 130371253 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130371539) 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, 65185754 + 65185755.
It is an arithmetic number, because the mean of its divisors is an integer number (65185755).
Almost surely, 2130371509 is an apocalyptic number.
It is an amenable number.
130371509 is a deficient number, since it is larger than the sum of its proper divisors (1).
130371509 is an equidigital number, since it uses as much as digits as its factorization.
130371509 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 2835, while the sum is 29.
The square root of 130371509 is about 11418.0343754956. The cubic root of 130371509 is about 507.0618042862.
The spelling of 130371509 in words is "one hundred thirty million, three hundred seventy-one thousand, five hundred nine".
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