Search a number
-
+
12013102143 = 34721187129
BaseRepresentation
bin10110011000000100…
…10110010000111111
31011000012202211010000
423030002112100333
5144100323232033
65304014245343
7603460453260
oct131402262077
934005684100
1012013102143
1151050a0499
1223b31b6853
131195aa1383
1481d66c967
154a49aca13
hex2cc09643f

12013102143 has 20 divisors (see below), whose sum is σ = 20509141840. Its totient is φ = 6864629472.

The previous prime is 12013102121. The next prime is 12013102201. The reversal of 12013102143 is 34120131021.

It is not a de Polignac number, because 12013102143 - 29 = 12013101631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013102103) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10592998 + ... + 10594131.

It is an arithmetic number, because the mean of its divisors is an integer number (1025457092).

Almost surely, 212013102143 is an apocalyptic number.

12013102143 is a deficient number, since it is larger than the sum of its proper divisors (8496039697).

12013102143 is an equidigital number, since it uses as much as digits as its factorization.

12013102143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21187148 (or 21187139 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12013102143 its reverse (34120131021), we get a palindrome (46133233164).

The spelling of 12013102143 in words is "twelve billion, thirteen million, one hundred two thousand, one hundred forty-three".

Divisors: 1 3 7 9 21 27 63 81 189 567 21187129 63561387 148309903 190684161 444929709 572052483 1334789127 1716157449 4004367381 12013102143