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230023221 = 3563136189
BaseRepresentation
bin11011011010111…
…10000000110101
3121000211101112120
431231132000311
5432341220341
634454110153
75462110431
oct1555360065
9530741476
10230023221
1110892993a
126504b359
1338869a1c
14227999c1
15152da066
hexdb5e035

230023221 has 8 divisors (see below), whose sum is σ = 307244640. Its totient is φ = 153075312.

The previous prime is 230023169. The next prime is 230023231. The reversal of 230023221 is 122320032.

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

It is not a de Polignac number, because 230023221 - 211 = 230021173 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 230023221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230023231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66406 + ... + 69783.

It is an arithmetic number, because the mean of its divisors is an integer number (38405580).

Almost surely, 2230023221 is an apocalyptic number.

It is an amenable number.

230023221 is a deficient number, since it is larger than the sum of its proper divisors (77221419).

230023221 is a wasteful number, since it uses less digits than its factorization.

230023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136755.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 230023221 is about 15166.5164424795. The cubic root of 230023221 is about 612.7131861538.

Adding to 230023221 its reverse (122320032), we get a palindrome (352343253).

The spelling of 230023221 in words is "two hundred thirty million, twenty-three thousand, two hundred twenty-one".

Divisors: 1 3 563 1689 136189 408567 76674407 230023221