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12013230213 = 3253227110947
BaseRepresentation
bin10110011000000101…
…10101100010000101
31011000020000022210100
423030002311202011
5144100341331323
65304021114313
7603461525535
oct131402654205
934006008710
1012013230213
115105178736
1223b3258999
131195b1775a
1481d6a34c5
154a49d5943
hex2cc0b5885

12013230213 has 24 divisors (see below), whose sum is σ = 17757893088. Its totient is φ = 7823024352.

The previous prime is 12013230199. The next prime is 12013230223. The reversal of 12013230213 is 31203231021.

It is not a de Polignac number, because 12013230213 - 24 = 12013230197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013230223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52806 + ... + 163752.

It is an arithmetic number, because the mean of its divisors is an integer number (739912212).

Almost surely, 212013230213 is an apocalyptic number.

It is an amenable number.

12013230213 is a deficient number, since it is larger than the sum of its proper divisors (5744662875).

12013230213 is a wasteful number, since it uses less digits than its factorization.

12013230213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111233 (or 111230 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12013230213 its reverse (31203231021), we get a palindrome (43216461234).

The spelling of 12013230213 in words is "twelve billion, thirteen million, two hundred thirty thousand, two hundred thirteen".

Divisors: 1 3 9 53 159 227 477 681 2043 12031 36093 108279 110947 332841 998523 5880191 17640573 25184969 52921719 75554907 226664721 1334803357 4004410071 12013230213