Base | Representation |
---|---|
bin | 11000011100011001… |
… | …10011111100110111 |
3 | 1020212120111122202020 |
4 | 30032030303330313 |
5 | 203334011011211 |
6 | 10010110244223 |
7 | 643126601361 |
oct | 141614637467 |
9 | 36776448666 |
10 | 13123141431 |
11 | 5624742434 |
12 | 2662ab6673 |
13 | 1311a5875a |
14 | 8c6c61d31 |
15 | 51c178306 |
hex | 30e333f37 |
13123141431 has 8 divisors (see below), whose sum is σ = 17498054784. Its totient is φ = 8748494520.
The previous prime is 13123141417. The next prime is 13123141439. The reversal of 13123141431 is 13414132131.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13123141431 - 217 = 13123010359 is a prime.
It is a super-2 number, since 2×131231414312 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13123141439) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138880 + ... + 213386.
It is an arithmetic number, because the mean of its divisors is an integer number (2187256848).
Almost surely, 213123141431 is an apocalyptic number.
13123141431 is a deficient number, since it is larger than the sum of its proper divisors (4374913353).
13123141431 is an equidigital number, since it uses as much as digits as its factorization.
13123141431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 133221.
The product of its digits is 864, while the sum is 24.
Adding to 13123141431 its reverse (13414132131), we get a palindrome (26537273562).
The spelling of 13123141431 in words is "thirteen billion, one hundred twenty-three million, one hundred forty-one thousand, four hundred thirty-one".
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