Base | Representation |
---|---|
bin | 11000101001001100… |
… | …00101101100110111 |
3 | 1021011001101112102010 |
4 | 30110212011230313 |
5 | 204043442243111 |
6 | 10024502015303 |
7 | 645601544136 |
oct | 142446055467 |
9 | 37131345363 |
10 | 13230431031 |
11 | 567a262724 |
12 | 2692a17533 |
13 | 132b05221c |
14 | 8d71cd91d |
15 | 5267bcaa6 |
hex | 314985b37 |
13230431031 has 16 divisors (see below), whose sum is σ = 17697542400. Its totient is φ = 8791832448.
The previous prime is 13230431021. The next prime is 13230431047. The reversal of 13230431031 is 13013403231.
13230431031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 13230431031 - 210 = 13230430007 is a prime.
It is a super-2 number, since 2×132304310312 (a number of 21 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 13230430989 and 13230431007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13230431021) 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 15 ways as a sum of consecutive naturals, for example, 3510310 + ... + 3514076.
It is an arithmetic number, because the mean of its divisors is an integer number (1106096400).
Almost surely, 213230431031 is an apocalyptic number.
13230431031 is a deficient number, since it is larger than the sum of its proper divisors (4467111369).
13230431031 is a wasteful number, since it uses less digits than its factorization.
13230431031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7238.
The product of its (nonzero) digits is 648, while the sum is 21.
Adding to 13230431031 its reverse (13013403231), we get a palindrome (26243834262).
The spelling of 13230431031 in words is "thirteen billion, two hundred thirty million, four hundred thirty-one thousand, thirty-one".
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