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203243 = 192563
BaseRepresentation
bin110001100111101011
3101022210112
4301213223
523000433
64204535
71504355
oct614753
9338715
10203243
11129777
129974b
1371681
14540d5
1540348
hex319eb

203243 has 6 divisors (see below), whose sum is σ = 214884. Its totient is φ = 192204.

The previous prime is 203233. The next prime is 203249. The reversal of 203243 is 342302.

It is not a de Polignac number, because 203243 - 24 = 203227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80 + ... + 642.

It is an arithmetic number, because the mean of its divisors is an integer number (35814).

2203243 is an apocalyptic number.

203243 is a deficient number, since it is larger than the sum of its proper divisors (11641).

203243 is an equidigital number, since it uses as much as digits as its factorization.

203243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 203243 is about 450.8247996728. The cubic root of 203243 is about 58.7947478611.

Adding to 203243 its reverse (342302), we get a palindrome (545545).

The spelling of 203243 in words is "two hundred three thousand, two hundred forty-three", and thus it is an iban number.

Divisors: 1 19 361 563 10697 203243