Base | Representation |
---|---|
bin | 111101000110111101… |
… | …1001001110011110101 |
3 | 110112201122121110110001 |
4 | 1322031323021303311 |
5 | 4122224402104023 |
6 | 140141500431301 |
7 | 12324001361446 |
oct | 1721573116365 |
9 | 415648543401 |
10 | 131230113013 |
11 | 50721a8325a |
12 | 21524848531 |
13 | c4b49b055c |
14 | 64cc9d72cd |
15 | 3630d4b6ad |
hex | 1e8dec9cf5 |
131230113013 has 8 divisors (see below), whose sum is σ = 133053709400. Its totient is φ = 129407217408.
The previous prime is 131230112963. The next prime is 131230113023. The reversal of 131230113013 is 310311032131.
It can be written as a sum of positive squares in 4 ways, for example, as 88433674884 + 42796438129 = 297378^2 + 206873^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 131230113013 - 217 = 131229981941 is a prime.
It is a super-2 number, since 2×1312301130132 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131230113023) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207703 + ... + 552811.
It is an arithmetic number, because the mean of its divisors is an integer number (16631713675).
Almost surely, 2131230113013 is an apocalyptic number.
It is an amenable number.
131230113013 is a deficient number, since it is larger than the sum of its proper divisors (1823596387).
131230113013 is an equidigital number, since it uses as much as digits as its factorization.
131230113013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 350391.
The product of its (nonzero) digits is 162, while the sum is 19.
Adding to 131230113013 its reverse (310311032131), we get a palindrome (441541145144).
The spelling of 131230113013 in words is "one hundred thirty-one billion, two hundred thirty million, one hundred thirteen thousand, thirteen".
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