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230404143 = 3372075713
BaseRepresentation
bin11011011101110…
…11000000101111
3121001112202001210
431232323000233
5432440413033
634510205503
75465255124
oct1556730057
9531482053
10230404143
1110906a052
12651b3893
1338971218
142285874b
1515362d63
hexdbbb02f

230404143 has 8 divisors (see below), whose sum is σ = 315508528. Its totient is φ = 149451264.

The previous prime is 230404123. The next prime is 230404151. The reversal of 230404143 is 341404032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-230404143 is a prime.

It is a super-3 number, since 3×2304041433 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230404103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037746 + ... + 1037967.

It is an arithmetic number, because the mean of its divisors is an integer number (39438566).

Almost surely, 2230404143 is an apocalyptic number.

230404143 is a deficient number, since it is larger than the sum of its proper divisors (85104385).

230404143 is a wasteful number, since it uses less digits than its factorization.

230404143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075753.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 230404143 is about 15179.0692402400. The cubic root of 230404143 is about 613.0512204530.

Adding to 230404143 its reverse (341404032), we get a palindrome (571808175).

The spelling of 230404143 in words is "two hundred thirty million, four hundred four thousand, one hundred forty-three".

Divisors: 1 3 37 111 2075713 6227139 76801381 230404143