Base | Representation |
---|---|
bin | 11000101001010010… |
… | …11100111000100111 |
3 | 1021011010001022110021 |
4 | 30110221130320213 |
5 | 204044203444143 |
6 | 10024532540011 |
7 | 645612204610 |
oct | 142451347047 |
9 | 37133038407 |
10 | 13231312423 |
11 | 567a80494a |
12 | 2693181607 |
13 | 132b2a0464 |
14 | 8d737cc07 |
15 | 5268e3ced |
hex | 314a5ce27 |
13231312423 has 8 divisors (see below), whose sum is σ = 15334479360. Its totient is φ = 11181390360.
The previous prime is 13231312387. The next prime is 13231312429. The reversal of 13231312423 is 32421313231.
13231312423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13231312423 - 229 = 12694441511 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13231312429) 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 7 ways as a sum of consecutive naturals, for example, 13310683 + ... + 13311676.
It is an arithmetic number, because the mean of its divisors is an integer number (1916809920).
Almost surely, 213231312423 is an apocalyptic number.
13231312423 is a deficient number, since it is larger than the sum of its proper divisors (2103166937).
13231312423 is an equidigital number, since it uses as much as digits as its factorization.
13231312423 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26622437.
The product of its digits is 2592, while the sum is 25.
Adding to 13231312423 its reverse (32421313231), we get a palindrome (45652625654).
The spelling of 13231312423 in words is "thirteen billion, two hundred thirty-one million, three hundred twelve thousand, four hundred twenty-three".
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