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2112550143 = 311281922709
BaseRepresentation
bin111110111101010…
…1111010011111111
312110020010122222220
41331322233103333
513311303101033
6545343140423
7103231244214
oct17572572377
95406118886
102112550143
11994530210
124ab5a4713
13278893392
141607d5b0b
15c56e5bb3
hex7deaf4ff

2112550143 has 16 divisors (see below), whose sum is σ = 3074025600. Its totient is φ = 1279822880.

The previous prime is 2112550129. The next prime is 2112550151. The reversal of 2112550143 is 3410552112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2112550143 - 222 = 2108355839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112550103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81673 + ... + 104381.

It is an arithmetic number, because the mean of its divisors is an integer number (192126600).

Almost surely, 22112550143 is an apocalyptic number.

2112550143 is a deficient number, since it is larger than the sum of its proper divisors (961475457).

2112550143 is a wasteful number, since it uses less digits than its factorization.

2112550143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25542.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2112550143 is about 45962.4862578168. The cubic root of 2112550143 is about 1283.1251240036.

It can be divided in two parts, 2112 and 550143, that added together give a palindrome (552255).

The spelling of 2112550143 in words is "two billion, one hundred twelve million, five hundred fifty thousand, one hundred forty-three".

Divisors: 1 3 11 33 2819 8457 22709 31009 68127 93027 249799 749397 64016671 192050013 704183381 2112550143