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204030431 = 1147394643
BaseRepresentation
bin11000010100101…
…00000111011111
3112012220211010122
430022110013133
5404212433211
632125025155
75025141623
oct1412240737
9465824118
10204030431
11a51960a0
12583b51bb
1333368987
141d151183
1512da36db
hexc2941df

204030431 has 8 divisors (see below), whose sum is σ = 227314944. Its totient is φ = 181535320.

The previous prime is 204030419. The next prime is 204030433. The reversal of 204030431 is 134030402.

204030431 is digitally balanced in base 2, 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 204030431 - 26 = 204030367 is a prime.

It is a super-2 number, since 2×2040304312 = 83256833548091522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204030433) 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, 196805 + ... + 197838.

It is an arithmetic number, because the mean of its divisors is an integer number (28414368).

Almost surely, 2204030431 is an apocalyptic number.

204030431 is a deficient number, since it is larger than the sum of its proper divisors (23284513).

204030431 is a wasteful number, since it uses less digits than its factorization.

204030431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394701.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 204030431 is about 14283.9221154415. The cubic root of 204030431 is about 588.7058015002.

Adding to 204030431 its reverse (134030402), we get a palindrome (338060833).

The spelling of 204030431 in words is "two hundred four million, thirty thousand, four hundred thirty-one".

Divisors: 1 11 47 517 394643 4341073 18548221 204030431