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230820023 = 7372693313
BaseRepresentation
bin11011100001000…
…00100010110111
3121002022212112202
431300200202313
5433042220043
634523135115
75501636450
oct1560404267
9532285482
10230820023
11109323555
126537449b
1338a885c5
1422926127
15153e61b8
hexdc208b7

230820023 has 16 divisors (see below), whose sum is σ = 272013120. Its totient is φ = 191725056.

The previous prime is 230819989. The next prime is 230820043. The reversal of 230820023 is 320028032.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 230820023 - 28 = 230819767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230819977 and 230820004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230820043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68015 + ... + 71327.

It is an arithmetic number, because the mean of its divisors is an integer number (17000820).

Almost surely, 2230820023 is an apocalyptic number.

230820023 is a deficient number, since it is larger than the sum of its proper divisors (41193097).

230820023 is a wasteful number, since it uses less digits than its factorization.

230820023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 230820023 is about 15192.7621912541. The cubic root of 230820023 is about 613.4198516956.

Adding to 230820023 its reverse (320028032), we get a palindrome (550848055).

The spelling of 230820023 in words is "two hundred thirty million, eight hundred twenty thousand, twenty-three".

Divisors: 1 7 37 259 269 1883 3313 9953 23191 69671 122581 858067 891197 6238379 32974289 230820023