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230681 = 1167313
BaseRepresentation
bin111000010100011001
3102201102202
4320110121
524340211
64535545
71650353
oct702431
9381382
10230681
11148350
12b15b5
1380cc9
14600d3
154853b
hex38519

230681 has 8 divisors (see below), whose sum is σ = 256224. Its totient is φ = 205920.

The previous prime is 230663. The next prime is 230683. The reversal of 230681 is 186032.

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

It is not a de Polignac number, because 230681 - 214 = 214297 is a prime.

It is a super-2 number, since 2×2306812 = 106427447522, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 230681.

It is not an unprimeable number, because it can be changed into a prime (230683) 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, 581 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (32028).

2230681 is an apocalyptic number.

It is an amenable number.

230681 is a deficient number, since it is larger than the sum of its proper divisors (25543).

230681 is a wasteful number, since it uses less digits than its factorization.

230681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 230681 is about 480.2926191396. The cubic root of 230681 is about 61.3296672614.

The spelling of 230681 in words is "two hundred thirty thousand, six hundred eighty-one".

Divisors: 1 11 67 313 737 3443 20971 230681