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200405103 = 31917320323
BaseRepresentation
bin10111111000111…
…11000001101111
3111222002122010020
423330133001233
5402300430403
631515213223
74652262303
oct1374370157
9458078106
10200405103
11a313a358
1257147213
1332699802
141c889d03
15128d9453
hexbf1f06f

200405103 has 16 divisors (see below), whose sum is σ = 282910080. Its totient is φ = 125833824.

The previous prime is 200405083. The next prime is 200405113. The reversal of 200405103 is 301504002.

It is not a de Polignac number, because 200405103 - 28 = 200404847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200405113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301 + ... + 20022.

It is an arithmetic number, because the mean of its divisors is an integer number (17681880).

Almost surely, 2200405103 is an apocalyptic number.

200405103 is a deficient number, since it is larger than the sum of its proper divisors (82504977).

200405103 is a wasteful number, since it uses less digits than its factorization.

200405103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20518.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 200405103 is about 14156.4509323488. The cubic root of 200405103 is about 585.1981241414.

Adding to 200405103 its reverse (301504002), we get a palindrome (501909105).

The spelling of 200405103 in words is "two hundred million, four hundred five thousand, one hundred three".

Divisors: 1 3 19 57 173 519 3287 9861 20323 60969 386137 1158411 3515879 10547637 66801701 200405103