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212014209 = 31143149411
BaseRepresentation
bin11001010001100…
…01010010000001
3112202221102211010
430220301102001
5413233423314
633012111133
75153043141
oct1450612201
9482842733
10212014209
11a9749460
125b0054a9
1334c028c4
142022c921
151392e059
hexca31481

212014209 has 16 divisors (see below), whose sum is σ = 315558144. Its totient is φ = 125504400.

The previous prime is 212014189. The next prime is 212014211. The reversal of 212014209 is 902410212.

It is not a de Polignac number, because 212014209 - 213 = 212006017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212014249) 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, 73287 + ... + 76124.

It is an arithmetic number, because the mean of its divisors is an integer number (19722384).

Almost surely, 2212014209 is an apocalyptic number.

It is an amenable number.

212014209 is a deficient number, since it is larger than the sum of its proper divisors (103543935).

212014209 is a wasteful number, since it uses less digits than its factorization.

212014209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149468.

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

The square root of 212014209 is about 14560.7077094487. The cubic root of 212014209 is about 596.2865169325.

The spelling of 212014209 in words is "two hundred twelve million, fourteen thousand, two hundred nine".

Divisors: 1 3 11 33 43 129 473 1419 149411 448233 1643521 4930563 6424673 19274019 70671403 212014209