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23030032312 = 237894620793
BaseRepresentation
bin10101011100101100…
…100110011110111000
32012110000001212011201
4111130230212132320
5334131142013222
614325125303544
71443464021230
oct253454463670
965400055151
1023030032312
119848942161
124568864bb4
132230375a71
1411868a8cc0
158ebc93427
hex55cb267b8

23030032312 has 32 divisors (see below), whose sum is σ = 49904575200. Its totient is φ = 9759112704.

The previous prime is 23030032309. The next prime is 23030032313. The reversal of 23030032312 is 21323003032.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23030032312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23030032313) 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 7 ways as a sum of consecutive naturals, for example, 2305413 + ... + 2315380.

It is an arithmetic number, because the mean of its divisors is an integer number (1559517975).

Almost surely, 223030032312 is an apocalyptic number.

It is an amenable number.

23030032312 is an abundant number, since it is smaller than the sum of its proper divisors (26874542888).

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

23030032312 is a wasteful number, since it uses less digits than its factorization.

23030032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620895 (or 4620891 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 23030032312 its reverse (21323003032), we get a palindrome (44353035344).

The spelling of 23030032312 in words is "twenty-three billion, thirty million, thirty-two thousand, three hundred twelve".

Divisors: 1 2 4 7 8 14 28 56 89 178 356 623 712 1246 2492 4984 4620793 9241586 18483172 32345551 36966344 64691102 129382204 258764408 411250577 822501154 1645002308 2878754039 3290004616 5757508078 11515016156 23030032312