Base | Representation |
---|---|
bin | 111100101010111110… |
… | …1111010100100011001 |
3 | 110110022020002110211021 |
4 | 1321111331322210121 |
5 | 4113314034003141 |
6 | 135504403002441 |
7 | 12261511613110 |
oct | 1712575724431 |
9 | 413266073737 |
10 | 130291312921 |
11 | 5029005a910 |
12 | 21302369421 |
13 | c395350543 |
14 | 644005ac77 |
15 | 35c87086d1 |
hex | 1e55f7a919 |
130291312921 has 16 divisors (see below), whose sum is σ = 162509856768. Its totient is φ = 101482736400.
The previous prime is 130291312889. The next prime is 130291312933. The reversal of 130291312921 is 129213192031.
It is a cyclic number.
It is not a de Polignac number, because 130291312921 - 25 = 130291312889 is a prime.
It is not an unprimeable number, because it can be changed into a prime (130291312981) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174265 + ... + 539398.
It is an arithmetic number, because the mean of its divisors is an integer number (10156866048).
Almost surely, 2130291312921 is an apocalyptic number.
130291312921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
130291312921 is a deficient number, since it is larger than the sum of its proper divisors (32218543847).
130291312921 is a wasteful number, since it uses less digits than its factorization.
130291312921 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 716052.
The product of its (nonzero) digits is 5832, while the sum is 34.
The spelling of 130291312921 in words is "one hundred thirty billion, two hundred ninety-one million, three hundred twelve thousand, nine hundred twenty-one".
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