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230412133 = 71033131021
BaseRepresentation
bin11011011101111…
…00111101100101
3121001120011000201
431232330331211
5432441142013
634510310501
75465320330
oct1556747545
9531504021
10230412133
11109075056
12651b8431
1338974a53
142285b617
15153653dd
hexdbbcf65

230412133 has 16 divisors (see below), whose sum is σ = 266995456. Its totient is φ = 194762880.

The previous prime is 230412121. The next prime is 230412139. The reversal of 230412133 is 331214032.

It is a cyclic number.

It is not a de Polignac number, because 230412133 - 225 = 196857701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230412133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230412139) by changing a digit.

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, 225163 + ... + 226183.

It is an arithmetic number, because the mean of its divisors is an integer number (16687216).

Almost surely, 2230412133 is an apocalyptic number.

It is an amenable number.

230412133 is a deficient number, since it is larger than the sum of its proper divisors (36583323).

230412133 is a wasteful number, since it uses less digits than its factorization.

230412133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 230412133 is about 15179.3324293264. The cubic root of 230412133 is about 613.0583068745.

Adding to 230412133 its reverse (331214032), we get a palindrome (561626165).

The spelling of 230412133 in words is "two hundred thirty million, four hundred twelve thousand, one hundred thirty-three".

Divisors: 1 7 103 313 721 1021 2191 7147 32239 105163 225673 319573 736141 2237011 32916019 230412133