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206303401 = 5312133209
BaseRepresentation
bin11000100101111…
…11000010101001
3112101012022001201
430102333002221
5410303202101
632245444201
75053356433
oct1422770251
9471168051
10206303401
11a64a8887
1259110661
1333983425
141d583653
15131a1e01
hexc4bf0a9

206303401 has 8 divisors (see below), whose sum is σ = 210434760. Its totient is φ = 202180992.

The previous prime is 206303369. The next prime is 206303411. The reversal of 206303401 is 104303602.

206303401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12425625 + 193877776 = 3525^2 + 13924^2 .

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 206303401 - 25 = 206303369 is a prime.

It is a super-2 number, since 2×2063034012 = 85122186528333602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206303411) 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, 62685 + ... + 65893.

It is an arithmetic number, because the mean of its divisors is an integer number (26304345).

Almost surely, 2206303401 is an apocalyptic number.

It is an amenable number.

206303401 is a deficient number, since it is larger than the sum of its proper divisors (4131359).

206303401 is a wasteful number, since it uses less digits than its factorization.

206303401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 206303401 is about 14363.2656801996. The cubic root of 206303401 is about 590.8838624560.

The spelling of 206303401 in words is "two hundred six million, three hundred three thousand, four hundred one".

Divisors: 1 53 1213 3209 64289 170077 3892517 206303401