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208050631 = 1817731487
BaseRepresentation
bin11000110011010…
…01100111000111
3112111111001210221
430121221213013
5411230110011
632351125211
75104254415
oct1431514707
9474431727
10208050631
11a7491578
1259813807
13341457a9
141d8ba2b5
15133e9971
hexc6699c7

208050631 has 8 divisors (see below), whose sum is σ = 209611584. Its totient is φ = 206494560.

The previous prime is 208050581. The next prime is 208050649. The reversal of 208050631 is 136050802.

It is a happy number.

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 208050631 - 215 = 208017863 is a prime.

It is a super-2 number, since 2×2080506312 = 86570130118996322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208050596 and 208050605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208050671) 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, 139170 + ... + 140656.

It is an arithmetic number, because the mean of its divisors is an integer number (26201448).

Almost surely, 2208050631 is an apocalyptic number.

208050631 is a deficient number, since it is larger than the sum of its proper divisors (1560953).

208050631 is a wasteful number, since it uses less digits than its factorization.

208050631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 208050631 is about 14423.9603091523. The cubic root of 208050631 is about 592.5472848256.

The spelling of 208050631 in words is "two hundred eight million, fifty thousand, six hundred thirty-one".

Divisors: 1 181 773 1487 139913 269147 1149451 208050631