Search a number
-
+
12553012231 = 437936710069
BaseRepresentation
bin10111011000011011…
…11100010000000111
31012101211201002111221
423230031330100013
5201202032342411
65433342341211
7623034562204
oct135415742007
935354632457
1012553012231
115361936981
122523b8a807
1312508bb0b6
14871252cab
154d70ab071
hex2ec37c407

12553012231 has 16 divisors (see below), whose sum is σ = 13044275200. Its totient is φ = 12071693088.

The previous prime is 12553012217. The next prime is 12553012259. The reversal of 12553012231 is 13221035521.

12553012231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12553012231 - 213 = 12553004039 is a prime.

It is a super-2 number, since 2×125530122312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12553012196 and 12553012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12553012201) 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, 1241665 + ... + 1251733.

It is an arithmetic number, because the mean of its divisors is an integer number (815267200).

Almost surely, 212553012231 is an apocalyptic number.

12553012231 is a deficient number, since it is larger than the sum of its proper divisors (491262969).

12553012231 is a wasteful number, since it uses less digits than its factorization.

12553012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10558.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 12553012231 its reverse (13221035521), we get a palindrome (25774047752).

The spelling of 12553012231 in words is "twelve billion, five hundred fifty-three million, twelve thousand, two hundred thirty-one".

Divisors: 1 43 79 367 3397 10069 15781 28993 432967 795451 1246699 3695323 34204393 158898889 291930517 12553012231