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230031130 = 2575362003
BaseRepresentation
bin11011011010111…
…11111100011010
3121000211210101111
431231133330122
5432341444010
634454210534
75462142460
oct1555377432
9530753344
10230031130
1110893487a
1265053a4a
13388704c4
142279c830
15152dc58a
hexdb5ff1a

230031130 has 32 divisors (see below), whose sum is σ = 482143104. Its totient is φ = 77378496.

The previous prime is 230031121. The next prime is 230031169. The reversal of 230031130 is 31130032.

It is a self number, because there is not a number n which added to its sum of digits gives 230031130.

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 15 ways as a sum of consecutive naturals, for example, 27292 + ... + 34711.

It is an arithmetic number, because the mean of its divisors is an integer number (15066972).

Almost surely, 2230031130 is an apocalyptic number.

230031130 is an abundant number, since it is smaller than the sum of its proper divisors (252111974).

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

230031130 is a wasteful number, since it uses less digits than its factorization.

230031130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62070.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 230031130 is about 15166.7771790846. Note that the first 3 decimals coincide. The cubic root of 230031130 is about 612.7202084782.

Adding to 230031130 its reverse (31130032), we get a palindrome (261161162).

The spelling of 230031130 in words is "two hundred thirty million, thirty-one thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 35 53 70 106 265 371 530 742 1855 3710 62003 124006 310015 434021 620030 868042 2170105 3286159 4340210 6572318 16430795 23003113 32861590 46006226 115015565 230031130