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231043230 = 2325111971173
BaseRepresentation
bin11011100010101…
…11000010011110
3121002202012201200
431301113002132
5433121340410
634532020330
75503556265
oct1561270236
9532665650
10231043230
11109466220
12654616a6
1338b36092
14229835dc
151543c3c0
hexdc5709e

231043230 has 192 divisors, whose sum is σ = 703572480. Its totient is φ = 52012800.

The previous prime is 231043193. The next prime is 231043283. The reversal of 231043230 is 32340132.

231043230 is a `hidden beast` number, since 231 + 0 + 432 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1335424 + ... + 1335596.

It is an arithmetic number, because the mean of its divisors is an integer number (3664440).

Almost surely, 2231043230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231043230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351786240).

231043230 is an abundant number, since it is smaller than the sum of its proper divisors (472529250).

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

231043230 is a wasteful number, since it uses less digits than its factorization.

231043230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 231043230 is about 15200.1062496287. The cubic root of 231043230 is about 613.6175172364.

Adding to 231043230 its reverse (32340132), we get a palindrome (263383362).

The spelling of 231043230 in words is "two hundred thirty-one million, forty-three thousand, two hundred thirty".