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230319709 = 3717213617
BaseRepresentation
bin11011011101001…
…10011001011101
3121001101110020121
431232212121131
5432430212314
634504314541
75464454014
oct1556463135
9531343217
10230319709
11109011674
1265172a51
1338941969
1422835a7b
1515347d24
hexdba665d

230319709 has 8 divisors (see below), whose sum is σ = 236747448. Its totient is φ = 223902720.

The previous prime is 230319703. The next prime is 230319721. The reversal of 230319709 is 907913032.

It can be written as a sum of positive squares in 4 ways, for example, as 32832900 + 197486809 = 5730^2 + 14053^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 230319709 - 23 = 230319701 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 (230319701) 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 7 ways as a sum of consecutive naturals, for example, 61869 + ... + 65485.

It is an arithmetic number, because the mean of its divisors is an integer number (29593431).

Almost surely, 2230319709 is an apocalyptic number.

It is an amenable number.

230319709 is a deficient number, since it is larger than the sum of its proper divisors (6427739).

230319709 is a wasteful number, since it uses less digits than its factorization.

230319709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5375.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 230319709 is about 15176.2877213105. The cubic root of 230319709 is about 612.9763249667.

The spelling of 230319709 in words is "two hundred thirty million, three hundred nineteen thousand, seven hundred nine".

Divisors: 1 37 1721 3617 63677 133829 6224857 230319709