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230405105 = 573373631
BaseRepresentation
bin11011011101110…
…11001111110001
3121001112210101102
431232323033301
5432440430410
634510214145
75465261000
oct1556731761
9531483342
10230405105
1110906a847
12651b4355
13389717a8
1422858c37
15153632a5
hexdbbb3f1

230405105 has 32 divisors (see below), whose sum is σ = 331238400. Its totient is φ = 153679680.

The previous prime is 230405081. The next prime is 230405141. The reversal of 230405105 is 501504032.

It is not a de Polignac number, because 230405105 - 210 = 230404081 is a prime.

It is a super-2 number, since 2×2304051052 = 106173024820122050, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 61640 + ... + 65270.

It is an arithmetic number, because the mean of its divisors is an integer number (10351200).

Almost surely, 2230405105 is an apocalyptic number.

It is an amenable number.

230405105 is a deficient number, since it is larger than the sum of its proper divisors (100833295).

230405105 is an equidigital number, since it uses as much as digits as its factorization.

230405105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3694 (or 3680 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 230405105 is about 15179.1009285794. The cubic root of 230405105 is about 613.0520736704.

Adding to 230405105 its reverse (501504032), we get a palindrome (731909137).

The spelling of 230405105 in words is "two hundred thirty million, four hundred five thousand, one hundred five".

Divisors: 1 5 7 35 37 49 185 245 259 343 1295 1715 1813 3631 9065 12691 18155 25417 63455 127085 134347 177919 671735 889595 940429 1245433 4702145 6227165 6583003 32915015 46081021 230405105