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212183103 = 31117378223
BaseRepresentation
bin11001010010110…
…10100000111111
3112210021000111110
430221122200333
5413304324403
633015453103
75154345426
oct1451324077
9483230443
10212183103
11a9854340
125b087193
1334c61742
14202742bd
1513964103
hexca5a83f

212183103 has 16 divisors (see below), whose sum is σ = 326785536. Its totient is φ = 121031040.

The previous prime is 212183039. The next prime is 212183107. The reversal of 212183103 is 301381212.

It is not a de Polignac number, because 212183103 - 26 = 212183039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212183103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212183107) 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, 188551 + ... + 189672.

It is an arithmetic number, because the mean of its divisors is an integer number (20424096).

Almost surely, 2212183103 is an apocalyptic number.

212183103 is a deficient number, since it is larger than the sum of its proper divisors (114602433).

212183103 is a wasteful number, since it uses less digits than its factorization.

212183103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378254.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 212183103 is about 14566.5062043031. The cubic root of 212183103 is about 596.4448121164. Note that the first 3 decimals are identical.

It can be divided in two parts, 212 and 183103, that added together give a triangular number (183315 = T605).

The spelling of 212183103 in words is "two hundred twelve million, one hundred eighty-three thousand, one hundred three".

Divisors: 1 3 11 17 33 51 187 561 378223 1134669 4160453 6429791 12481359 19289373 70727701 212183103