Base | Representation |
---|---|
bin | 11001001101000010… |
… | …01010100110000101 |
3 | 1021221000012122012001 |
4 | 30212201022212011 |
5 | 210202432131440 |
6 | 10114403025301 |
7 | 656212465213 |
oct | 144641124605 |
9 | 37830178161 |
10 | 13531130245 |
11 | 5813a74476 |
12 | 275766b231 |
13 | 1378436359 |
14 | 925105cb3 |
15 | 542db8b9a |
hex | 32684a985 |
13531130245 has 8 divisors (see below), whose sum is σ = 16308263160. Its totient is φ = 10777632960.
The previous prime is 13531130243. The next prime is 13531130281. The reversal of 13531130245 is 54203113531.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 655462404 + 12875667841 = 25602^2 + 113471^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13531130245 - 21 = 13531130243 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13531130243) 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, 5907646 + ... + 5909935.
It is an arithmetic number, because the mean of its divisors is an integer number (2038532895).
Almost surely, 213531130245 is an apocalyptic number.
It is an amenable number.
13531130245 is a deficient number, since it is larger than the sum of its proper divisors (2777132915).
13531130245 is a wasteful number, since it uses less digits than its factorization.
13531130245 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11817815.
The product of its (nonzero) digits is 5400, while the sum is 28.
Adding to 13531130245 its reverse (54203113531), we get a palindrome (67734243776).
The spelling of 13531130245 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty thousand, two hundred forty-five".
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