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230011243 = 7211426737
BaseRepresentation
bin11011011010110…
…11000101101011
3121000210210002221
431231123011223
5432340324433
634453534511
75462030500
oct1555330553
9530723087
10230011243
11108920940
1265044437
1338864437
14227954a7
15152d672d
hexdb5b16b

230011243 has 12 divisors (see below), whose sum is σ = 291888792. Its totient is φ = 179229120.

The previous prime is 230011231. The next prime is 230011259. The reversal of 230011243 is 342110032.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-230011243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230011273) 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 11 ways as a sum of consecutive naturals, for example, 212830 + ... + 213907.

It is an arithmetic number, because the mean of its divisors is an integer number (24324066).

Almost surely, 2230011243 is an apocalyptic number.

230011243 is a deficient number, since it is larger than the sum of its proper divisors (61877549).

230011243 is a wasteful number, since it uses less digits than its factorization.

230011243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426762 (or 426755 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 230011243 is about 15166.1215543065. The cubic root of 230011243 is about 612.7025506972.

Adding to 230011243 its reverse (342110032), we get a palindrome (572121275).

The spelling of 230011243 in words is "two hundred thirty million, eleven thousand, two hundred forty-three".

Divisors: 1 7 11 49 77 539 426737 2987159 4694107 20910113 32858749 230011243