Base | Representation |
---|---|
bin | 11000010000101111… |
… | …11110001000100111 |
3 | 1020121202121001102022 |
4 | 30020113332020213 |
5 | 203134000402211 |
6 | 5552255333355 |
7 | 640532050055 |
oct | 141027761047 |
9 | 36552531368 |
10 | 13025403431 |
11 | 5584556427 |
12 | 263622125b |
13 | 12c7727711 |
14 | 8b7c9d1d5 |
15 | 5137bdbdb |
hex | 3085fe227 |
13025403431 has 4 divisors (see below), whose sum is σ = 13710951000. Its totient is φ = 12339855864.
The previous prime is 13025403361. The next prime is 13025403473. The reversal of 13025403431 is 13430452031.
13025403431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13430452031 = 23 ⋅583932697.
It is a cyclic number.
It is not a de Polignac number, because 13025403431 - 230 = 11951661607 is a prime.
It is a super-2 number, since 2×130254034312 (a number of 21 digits) contains 22 as substring.
It is a zygodrome in base 6.
It is a self number, because there is not a number n which added to its sum of digits gives 13025403431.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13025403481) 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 3 ways as a sum of consecutive naturals, for example, 342773756 + ... + 342773793.
It is an arithmetic number, because the mean of its divisors is an integer number (3427737750).
Almost surely, 213025403431 is an apocalyptic number.
13025403431 is a deficient number, since it is larger than the sum of its proper divisors (685547569).
13025403431 is an equidigital number, since it uses as much as digits as its factorization.
13025403431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 685547568.
The product of its (nonzero) digits is 4320, while the sum is 26.
Adding to 13025403431 its reverse (13430452031), we get a palindrome (26455855462).
The spelling of 13025403431 in words is "thirteen billion, twenty-five million, four hundred three thousand, four hundred thirty-one".
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