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13021230443 = 133097132341
BaseRepresentation
bin11000010000010000…
…00011010101101011
31020121110202001011012
430020020003111223
5203131413333233
65552030054135
7640451426654
oct141010032553
936543661135
1013021230443
115582166181
12263494a34b
1312c68c61b0
148b74d452b
15513247548
hex30820356b

13021230443 has 8 divisors (see below), whose sum is σ = 14023749936. Its totient is φ = 12018837600.

The previous prime is 13021230437. The next prime is 13021230451. The reversal of 13021230443 is 34403212031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13021230443 - 216 = 13021164907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13021230403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386453 + ... + 418793.

It is an arithmetic number, because the mean of its divisors is an integer number (1752968742).

Almost surely, 213021230443 is an apocalyptic number.

13021230443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13021230443 is a deficient number, since it is larger than the sum of its proper divisors (1002519493).

13021230443 is a wasteful number, since it uses less digits than its factorization.

13021230443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63325.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 13021230443 its reverse (34403212031), we get a palindrome (47424442474).

The spelling of 13021230443 in words is "thirteen billion, twenty-one million, two hundred thirty thousand, four hundred forty-three".

Divisors: 1 13 30971 32341 402623 420433 1001633111 13021230443