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1311112202330 = 257197806911783
BaseRepresentation
bin10011000101000100011…
…000001000100001011010
311122100012122220211010102
4103011010120020201122
5132440124210433310
62442152220415402
7163503403560620
oct23050430104132
94570178824112
101311112202330
11466048726287
121921289a7562
13968393486a8
144765b305510
15241897798a5
hex1314460885a

1311112202330 has 64 divisors (see below), whose sum is σ = 2711402242560. Its totient is φ = 447148955904.

The previous prime is 1311112202327. The next prime is 1311112202339. The reversal of 1311112202330 is 332022111131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1311112202339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111265619 + ... + 111277401.

It is an arithmetic number, because the mean of its divisors is an integer number (42365660040).

Almost surely, 21311112202330 is an apocalyptic number.

1311112202330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311112202330 is an abundant number, since it is smaller than the sum of its proper divisors (1400290040230).

1311112202330 is a wasteful number, since it uses less digits than its factorization.

1311112202330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20063.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1311112202330 its reverse (332022111131), we get a palindrome (1643134313461).

The spelling of 1311112202330 in words is "one trillion, three hundred eleven billion, one hundred twelve million, two hundred two thousand, three hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 197 394 985 1379 1970 2758 6895 8069 11783 13790 16138 23566 40345 56483 58915 80690 82481 112966 117830 164962 282415 412405 564830 824810 1589593 2321251 3179186 4642502 7947965 11127151 11606255 15895930 16248757 22254302 23212510 32497514 55635755 81243785 95077027 111271510 162487570 190154054 475385135 665539189 950770270 1331078378 3327695945 6655391890 18730174319 37460348638 93650871595 131111220233 187301743190 262222440466 655556101165 1311112202330