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230320243 = 1021225583
BaseRepresentation
bin11011011101001…
…10100001110011
3121001101110222101
431232212201303
5432430221433
634504321231
75464455406
oct1556464163
9531343871
10230320243
1110901200a
1265173217
1338941c8a
1422835d3d
151534807d
hexdba6873

230320243 has 4 divisors (see below), whose sum is σ = 230546848. Its totient is φ = 230093640.

The previous prime is 230320213. The next prime is 230320271. The reversal of 230320243 is 342023032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230320243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230320243.

It is not an unprimeable number, because it can be changed into a prime (230320213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111771 + ... + 113812.

It is an arithmetic number, because the mean of its divisors is an integer number (57636712).

Almost surely, 2230320243 is an apocalyptic number.

230320243 is a deficient number, since it is larger than the sum of its proper divisors (226605).

230320243 is a wasteful number, since it uses less digits than its factorization.

230320243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226604.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 230320243 is about 15176.3053145356. The cubic root of 230320243 is about 612.9767986982.

Adding to 230320243 its reverse (342023032), we get a palindrome (572343275).

The spelling of 230320243 in words is "two hundred thirty million, three hundred twenty thousand, two hundred forty-three".

Divisors: 1 1021 225583 230320243