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230209079 = 376221867
BaseRepresentation
bin11011011100010…
…11011000110111
3121001011211111012
431232023120313
5432413142304
634502102435
75463513332
oct1556133067
9531154435
10230209079
11108a46541
126511aa1b
13389034b9
1422807619
151532516e
hexdb8b637

230209079 has 4 divisors (see below), whose sum is σ = 236430984. Its totient is φ = 223987176.

The previous prime is 230209037. The next prime is 230209103. The reversal of 230209079 is 970902032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230209079 - 212 = 230204983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230203079) 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 3 ways as a sum of consecutive naturals, for example, 3110897 + ... + 3110970.

It is an arithmetic number, because the mean of its divisors is an integer number (59107746).

Almost surely, 2230209079 is an apocalyptic number.

230209079 is a deficient number, since it is larger than the sum of its proper divisors (6221905).

230209079 is an equidigital number, since it uses as much as digits as its factorization.

230209079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6221904.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 230209079 is about 15172.6424527832. The cubic root of 230209079 is about 612.8781651353.

The spelling of 230209079 in words is "two hundred thirty million, two hundred nine thousand, seventy-nine".

Divisors: 1 37 6221867 230209079