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13123000220232 = 233788388463303
BaseRepresentation
bin1011111011110110111111…
…0001000011101001001000
31201110112202110010010012210
42332331233301003221020
53210001401024021412
643524342330105120
72523051115254510
oct276755761035110
951415673103183
1013123000220232
1141aa484565771
12157b3aa27b1a0
13742655603316
143352299d0840
1517b55cc2683c
hexbef6fc43a48

13123000220232 has 64 divisors (see below), whose sum is σ = 37536749153280. Its totient is φ = 3745182353472.

The previous prime is 13123000220203. The next prime is 13123000220237. The reversal of 13123000220232 is 23202200032131.

It is a happy number.

It is a super-3 number, since 3×131230002202323 (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 13123000220199 and 13123000220208.

It is not an unprimeable number, because it can be changed into a prime (13123000220237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44083308 + ... + 44379995.

It is an arithmetic number, because the mean of its divisors is an integer number (586511705520).

Almost surely, 213123000220232 is an apocalyptic number.

13123000220232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13123000220232 is an abundant number, since it is smaller than the sum of its proper divisors (24413748933048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123000220232 is a wasteful number, since it uses less digits than its factorization.

13123000220232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88464202 (or 88464198 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13123000220232 its reverse (23202200032131), we get a palindrome (36325200252363).

The spelling of 13123000220232 in words is "thirteen trillion, one hundred twenty-three billion, two hundred twenty thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 883 1766 2649 3532 5298 6181 7064 10596 12362 18543 21192 24724 37086 49448 74172 148344 88463303 176926606 265389909 353853212 530779818 619243121 707706424 1061559636 1238486242 1857729363 2123119272 2476972484 3715458726 4953944968 7430917452 14861834904 78113096549 156226193098 234339289647 312452386196 468678579294 546791675843 624904772392 937357158588 1093583351686 1640375027529 1874714317176 2187166703372 3280750055058 4374333406744 6561500110116 13123000220232