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230111212 = 22158336341
BaseRepresentation
bin11011011011100…
…11011111101100
3121000222212020111
431231303133230
5432402024322
634500025404
75462625112
oct1555633754
9530885214
10230111212
11108989a61
1265092264
133889aaa6
14227bdab2
1515306177
hexdb737ec

230111212 has 12 divisors (see below), whose sum is σ = 402960096. Its totient is φ = 114979760.

The previous prime is 230111209. The next prime is 230111227. The reversal of 230111212 is 212111032.

It is a junction number, because it is equal to n+sod(n) for n = 230111192 and 230111201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11839 + ... + 24502.

It is an arithmetic number, because the mean of its divisors is an integer number (33580008).

Almost surely, 2230111212 is an apocalyptic number.

It is an amenable number.

230111212 is a deficient number, since it is larger than the sum of its proper divisors (172848884).

230111212 is a wasteful number, since it uses less digits than its factorization.

230111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37928 (or 37926 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 230111212 is about 15169.4169960483. The cubic root of 230111212 is about 612.7913034451.

Adding to 230111212 its reverse (212111032), we get a palindrome (442222244).

The spelling of 230111212 in words is "two hundred thirty million, one hundred eleven thousand, two hundred twelve".

Divisors: 1 2 4 1583 3166 6332 36341 72682 145364 57527803 115055606 230111212