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232212212 = 2243231397
BaseRepresentation
bin11011101011101…
…00011011110100
3121011221121021022
431311310123310
5433421242322
635013040312
75516525351
oct1565643364
9534847238
10232212212
1110a094521
1265926098
133915519b
1422ba9628
15155bd942
hexdd746f4

232212212 has 18 divisors (see below), whose sum is σ = 416054898. Its totient is φ = 113402352.

The previous prime is 232212203. The next prime is 232212221. The reversal of 232212212 is 212212232.

It is an interprime number because it is at equal distance from previous prime (232212203) and next prime (232212221).

It can be written as a sum of positive squares in only one way, i.e., 191711716 + 40500496 = 13846^2 + 6364^2 .

It is a super-2 number, since 2×2322122122 = 107845022803865888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8303 + ... + 23094.

It is an arithmetic number, because the mean of its divisors is an integer number (23114161).

Almost surely, 2232212212 is an apocalyptic number.

It is an amenable number.

232212212 is a deficient number, since it is larger than the sum of its proper divisors (183842686).

232212212 is a wasteful number, since it uses less digits than its factorization.

232212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31487 (or 31442 counting only the distinct ones).

The product of its digits is 192, while the sum is 17.

The square root of 232212212 is about 15238.5108196306. The cubic root of 232212212 is about 614.6506593349.

Adding to 232212212 its reverse (212212232), we get a palindrome (444424444).

The spelling of 232212212 in words is "two hundred thirty-two million, two hundred twelve thousand, two hundred twelve".

Divisors: 1 2 4 43 86 172 1849 3698 7396 31397 62794 125588 1350071 2700142 5400284 58053053 116106106 232212212