Search a number
-
+
230212312 = 231112972017
BaseRepresentation
bin11011011100011…
…00001011011000
3121001011222220221
431232030023120
5432413243222
634502125424
75463525631
oct1556141330
9531158827
10230212312
11108a48a10
1265120874
1338904b05
1422808888
15153260c7
hexdb8c2d8

230212312 has 32 divisors (see below), whose sum is σ = 471485520. Its totient is φ = 104509440.

The previous prime is 230212309. The next prime is 230212327. The reversal of 230212312 is 213212032.

230212312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113128 + ... + 115144.

Almost surely, 2230212312 is an apocalyptic number.

230212312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

230212312 is an abundant number, since it is smaller than the sum of its proper divisors (241273208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230212312 is a wasteful number, since it uses less digits than its factorization.

230212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331 (or 3327 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 230212312 is about 15172.7489928490. The cubic root of 230212312 is about 612.8810341589.

Adding to 230212312 its reverse (213212032), we get a palindrome (443424344).

The spelling of 230212312 in words is "two hundred thirty million, two hundred twelve thousand, three hundred twelve".

Divisors: 1 2 4 8 11 22 44 88 1297 2017 2594 4034 5188 8068 10376 14267 16136 22187 28534 44374 57068 88748 114136 177496 2616049 5232098 10464196 20928392 28776539 57553078 115106156 230212312