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30243 = 317593
BaseRepresentation
bin111011000100011
31112111010
413120203
51431433
6352003
7154113
oct73043
945433
1030243
11207a4
1215603
13109c5
14b043
158e63
hex7623

30243 has 8 divisors (see below), whose sum is σ = 42768. Its totient is φ = 18944.

The previous prime is 30241. The next prime is 30253. The reversal of 30243 is 34203.

30243 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 30243 - 21 = 30241 is a prime.

30243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (30241) 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, 246 + ... + 347.

It is an arithmetic number, because the mean of its divisors is an integer number (5346).

230243 is an apocalyptic number.

30243 is a deficient number, since it is larger than the sum of its proper divisors (12525).

30243 is a wasteful number, since it uses less digits than its factorization.

30243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 30243 is about 173.9051465598. The cubic root of 30243 is about 31.1559948338.

Adding to 30243 its reverse (34203), we get a palindrome (64446).

The spelling of 30243 in words is "thirty thousand, two hundred forty-three".

Divisors: 1 3 17 51 593 1779 10081 30243