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1213312343230 = 251349331891987
BaseRepresentation
bin10001101001111111000…
…011010001110010111110
311021222202211020012210201
4101221333003101302332
5124334330424440410
62325215450154114
7153442003516231
oct21517703216276
94258684205721
101213312343230
11428621206649
12177193a2293a
138a5515b9790
1442a2055b418
152186378883a
hex11a7f0d1cbe

1213312343230 has 32 divisors (see below), whose sum is σ = 2352437335584. Its totient is φ = 447901197696.

The previous prime is 1213312343153. The next prime is 1213312343251. The reversal of 1213312343230 is 323432133121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304704 + ... + 1587283.

It is an arithmetic number, because the mean of its divisors is an integer number (73513666737).

Almost surely, 21213312343230 is an apocalyptic number.

1213312343230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213312343230 is a deficient number, since it is larger than the sum of its proper divisors (1139124992354).

1213312343230 is a wasteful number, since it uses less digits than its factorization.

1213312343230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896940.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1213312343230 its reverse (323432133121), we get a palindrome (1536744476351).

The spelling of 1213312343230 in words is "one trillion, two hundred thirteen billion, three hundred twelve million, three hundred forty-three thousand, two hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 4933 9866 24665 49330 64129 128258 320645 641290 1891987 3783974 9459935 18919870 24595831 49191662 122979155 245958310 9333171871 18666343742 46665859355 93331718710 121331234323 242662468646 606656171615 1213312343230