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13243634231 = 738913714879
BaseRepresentation
bin11000101010110000…
…11101001000110111
31021011222020022210112
430111120131020313
5204110332243411
610030053013235
7646122014342
oct142530351067
937158208715
1013243634231
115686760463
12269732421b
1313309c5a79
148d8c69459
15527a29b8b
hex31561d237

13243634231 has 16 divisors (see below), whose sum is σ = 13675910400. Its totient is φ = 12820313088.

The previous prime is 13243634207. The next prime is 13243634249.

13243634231 is nontrivially palindromic in base 10.

13243634231 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 13243634231 - 214 = 13243617847 is a prime.

It is a super-2 number, since 2×132436342312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243634731) 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, 882650 + ... + 897528.

It is an arithmetic number, because the mean of its divisors is an integer number (854744400).

Almost surely, 213243634231 is an apocalyptic number.

13243634231 is a deficient number, since it is larger than the sum of its proper divisors (432276169).

13243634231 is a wasteful number, since it uses less digits than its factorization.

13243634231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15178.

The product of its digits is 31104, while the sum is 32.

The spelling of 13243634231 in words is "thirteen billion, two hundred forty-three million, six hundred thirty-four thousand, two hundred thirty-one".

Divisors: 1 73 89 137 6497 10001 12193 14879 890089 1086167 1324231 2038423 96668863 148804879 181419647 13243634231