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1213123430410 = 25791535599279
BaseRepresentation
bin10001101001110011110…
…010101000100000001010
311021222021122202110010121
4101221303302220200022
5124333434044233120
62325145021133454
7153434221010053
oct21516362504012
94258248673117
101213123430410
11428534606651
121771406ba28a
138a521414b48
1442a0342372a
1521851dbe5aa
hex11a73ca880a

1213123430410 has 16 divisors (see below), whose sum is σ = 2211262963200. Its totient is φ = 479106974736.

The previous prime is 1213123430377. The next prime is 1213123430423. The reversal of 1213123430410 is 140343213121.

It is a super-2 number, since 2×12131234304102 (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767798850 + ... + 767800429.

It is an arithmetic number, because the mean of its divisors is an integer number (138203935200).

Almost surely, 21213123430410 is an apocalyptic number.

1213123430410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213123430410 is a deficient number, since it is larger than the sum of its proper divisors (998139532790).

1213123430410 is a wasteful number, since it uses less digits than its factorization.

1213123430410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535599365.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1213123430410 its reverse (140343213121), we get a palindrome (1353466643531).

The spelling of 1213123430410 in words is "one trillion, two hundred thirteen billion, one hundred twenty-three million, four hundred thirty thousand, four hundred ten".

Divisors: 1 2 5 10 79 158 395 790 1535599279 3071198558 7677996395 15355992790 121312343041 242624686082 606561715205 1213123430410