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2144312201 = 10924181629
BaseRepresentation
bin111111111001111…
…1001101110001001
312112102220100100102
41333303321232021
513342420442301
6552440015145
7104065232033
oct17763715611
95472810312
102144312201
11a00454549
124ba1614b5
132823343b5
14164b02c53
15c83bbb6b
hex7fcf9b89

2144312201 has 8 divisors (see below), whose sum is σ = 2172990600. Its totient is φ = 2115797760.

The previous prime is 2144312197. The next prime is 2144312237. The reversal of 2144312201 is 1022134412.

It can be written as a sum of positive squares in 4 ways, for example, as 1041740176 + 1102572025 = 32276^2 + 33205^2 .

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 2144312201 - 22 = 2144312197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144212201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14546 + ... + 67083.

It is an arithmetic number, because the mean of its divisors is an integer number (271623825).

Almost surely, 22144312201 is an apocalyptic number.

It is an amenable number.

2144312201 is a deficient number, since it is larger than the sum of its proper divisors (28678399).

2144312201 is a wasteful number, since it uses less digits than its factorization.

2144312201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81979.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2144312201 is about 46306.7187457717. The cubic root of 2144312201 is about 1289.5237311997.

Adding to 2144312201 its reverse (1022134412), we get a palindrome (3166446613).

The spelling of 2144312201 in words is "two billion, one hundred forty-four million, three hundred twelve thousand, two hundred one".

Divisors: 1 109 241 26269 81629 8897561 19672589 2144312201