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13312110231 = 327337116549
BaseRepresentation
bin11000110010111011…
…01010111010010111
31021100202002021012200
430121131222322113
5204230400011411
610040540415543
7650613033000
oct143135527227
937322067180
1013312110231
1157113804a2
1226b62475b3
131341c4ca04
14903db21a7
1552da53e56
hex31976ae97

13312110231 has 48 divisors (see below), whose sum is σ = 23030280000. Its totient is φ = 7401264192.

The previous prime is 13312110211. The next prime is 13312110257. The reversal of 13312110231 is 13201121331.

13312110231 is a `hidden beast` number, since 13 + 312 + 110 + 231 = 666.

It is not a de Polignac number, because 13312110231 - 25 = 13312110199 is a prime.

It is a super-2 number, since 2×133121102312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312110211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55945 + ... + 172493.

It is an arithmetic number, because the mean of its divisors is an integer number (479797500).

Almost surely, 213312110231 is an apocalyptic number.

13312110231 is a deficient number, since it is larger than the sum of its proper divisors (9718169769).

13312110231 is a wasteful number, since it uses less digits than its factorization.

13312110231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116613 (or 116596 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13312110231 its reverse (13201121331), we get a palindrome (26513231562).

The spelling of 13312110231 in words is "thirteen billion, three hundred twelve million, one hundred ten thousand, two hundred thirty-one".

Divisors: 1 3 7 9 21 37 49 63 111 147 259 333 343 441 777 1029 1813 2331 3087 5439 12691 16317 38073 114219 116549 349647 815843 1048941 2447529 4312313 5710901 7342587 12936939 17132703 30186191 38810817 39976307 51398109 90558573 119928921 211303337 271675719 359786763 633910011 1479123359 1901730033 4437370077 13312110231