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131220201143 = 3313917101209
BaseRepresentation
bin111101000110101010…
…1010101111010110111
3110112200221221212220202
41322031111111322313
54122214332414033
6140140504151115
712323521210043
oct1721525257267
9415627855822
10131220201143
1150717423329
122152146849b
13c4b291cb45
1464cb577023
15363003e8e8
hex1e8d555eb7

131220201143 has 8 divisors (see below), whose sum is σ = 131651538960. Its totient is φ = 130789074240.

The previous prime is 131220201107. The next prime is 131220201169. The reversal of 131220201143 is 341102022131.

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 131220201143 - 212 = 131220197047 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 (131220201173) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1245923 + ... + 1347131.

It is an arithmetic number, because the mean of its divisors is an integer number (16456442370).

Almost surely, 2131220201143 is an apocalyptic number.

131220201143 is a deficient number, since it is larger than the sum of its proper divisors (431337817).

131220201143 is a wasteful number, since it uses less digits than its factorization.

131220201143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105457.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131220201143 its reverse (341102022131), we get a palindrome (472322223274).

The spelling of 131220201143 in words is "one hundred thirty-one billion, two hundred twenty million, two hundred one thousand, one hundred forty-three".

Divisors: 1 331 3917 101209 1296527 33500179 396435653 131220201143