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230309317 = 7192516899
BaseRepresentation
bin11011011101000…
…11110111000101
3121001100220222201
431232203313011
5432424344232
634504154501
75464411510
oct1556436705
9531326881
10230309317
11109004887
1265168a31
133893a004
1422831d77
1515344be7
hexdba3dc5

230309317 has 16 divisors (see below), whose sum is σ = 278208000. Its totient is φ = 186246000.

The previous prime is 230309291. The next prime is 230309347. The reversal of 230309317 is 713903032.

It is a cyclic number.

It is not a de Polignac number, because 230309317 - 219 = 229785029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230309347) 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 15 ways as a sum of consecutive naturals, for example, 29934 + ... + 36832.

It is an arithmetic number, because the mean of its divisors is an integer number (17388000).

Almost surely, 2230309317 is an apocalyptic number.

It is an amenable number.

230309317 is a deficient number, since it is larger than the sum of its proper divisors (47898683).

230309317 is a wasteful number, since it uses less digits than its factorization.

230309317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7176.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 230309317 is about 15175.9453412300. The cubic root of 230309317 is about 612.9671056865.

The spelling of 230309317 in words is "two hundred thirty million, three hundred nine thousand, three hundred seventeen".

Divisors: 1 7 19 133 251 1757 4769 6899 33383 48293 131081 917567 1731649 12121543 32901331 230309317