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1213412243320 = 235191596595057
BaseRepresentation
bin10001101010000101000…
…000010111011101111000
311022000000210012122222001
4101222011000113131320
5124340032013241240
62325233415310344
7153444325614154
oct21520500273570
94260023178861
101213412243320
1142867263a002
1217720137b3b4
138a5691c6964
1442a2d924064
152186c41d89a
hex11a85017778

1213412243320 has 32 divisors (see below), whose sum is σ = 2873871104400. Its totient is φ = 459819376128.

The previous prime is 1213412243261. The next prime is 1213412243333. The reversal of 1213412243320 is 233422143121.

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, 798296769 + ... + 798298288.

Almost surely, 21213412243320 is an apocalyptic number.

1213412243320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213412243320 is an abundant number, since it is smaller than the sum of its proper divisors (1660458861080).

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

1213412243320 is a wasteful number, since it uses less digits than its factorization.

1213412243320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596595087 (or 1596595083 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1213412243320 its reverse (233422143121), we get a palindrome (1446834386441).

The spelling of 1213412243320 in words is "one trillion, two hundred thirteen billion, four hundred twelve million, two hundred forty-three thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 1596595057 3193190114 6386380228 7982975285 12772760456 15965950570 30335306083 31931901140 60670612166 63863802280 121341224332 151676530415 242682448664 303353060830 606706121660 1213412243320