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220144141 = 731449163
BaseRepresentation
bin11010001111100…
…10001000001101
3120100020110222201
431013302020031
5422324103031
633502241501
75312123440
oct1507621015
9510213881
10220144141
111032a1608
1261886291
13367bb209
1421347657
15144d7d61
hexd1f220d

220144141 has 4 divisors (see below), whose sum is σ = 251593312. Its totient is φ = 188694972.

The previous prime is 220144121. The next prime is 220144153. The reversal of 220144141 is 141441022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 141441022 = 270720511.

It is a cyclic number.

It is not a de Polignac number, because 220144141 - 219 = 219619853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220144121) 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 3 ways as a sum of consecutive naturals, for example, 15724575 + ... + 15724588.

It is an arithmetic number, because the mean of its divisors is an integer number (62898328).

Almost surely, 2220144141 is an apocalyptic number.

It is an amenable number.

220144141 is a deficient number, since it is larger than the sum of its proper divisors (31449171).

220144141 is an equidigital number, since it uses as much as digits as its factorization.

220144141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31449170.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 220144141 is about 14837.2551706844. The cubic root of 220144141 is about 603.8128860992.

Adding to 220144141 its reverse (141441022), we get a palindrome (361585163).

The spelling of 220144141 in words is "two hundred twenty million, one hundred forty-four thousand, one hundred forty-one".

Divisors: 1 7 31449163 220144141