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13112302232020 = 225682819601721
BaseRepresentation
bin1011111011001111001000…
…0111011110000111010100
31201102112010212222000021011
42332303302013132013110
53204312443332411040
643515413011102004
72522222034000505
oct276636207360724
951375125860234
1013112302232020
1141a59948558a2
1215793035a1904
1374163c12c394
143348d2c98bac
1517b1339423ea
hexbecf21de1d4

13112302232020 has 24 divisors (see below), whose sum is σ = 27536240827368. Its totient is φ = 5244843532800.

The previous prime is 13112302231991. The next prime is 13112302232063. The reversal of 13112302232020 is 2023220321131.

It can be written as a sum of positive squares in 4 ways, for example, as 864007236 + 13111438224784 = 29394^2 + 3620972^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13112302231982 and 13112302232000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3435241 + ... + 6166480.

It is an arithmetic number, because the mean of its divisors is an integer number (1147343367807).

Almost surely, 213112302232020 is an apocalyptic number.

13112302232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13112302232020 is an abundant number, since it is smaller than the sum of its proper divisors (14423938595348).

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

13112302232020 is a wasteful number, since it uses less digits than its factorization.

13112302232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9670011 (or 9670009 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13112302232020 its reverse (2023220321131), we get a palindrome (15135522553151).

The spelling of 13112302232020 in words is "thirteen trillion, one hundred twelve billion, three hundred two million, two hundred thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 68281 136562 273124 341405 682810 1365620 9601721 19203442 38406884 48008605 96017210 192034420 655615111601 1311230223202 2622460446404 3278075558005 6556151116010 13112302232020