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206031 = 379811
BaseRepresentation
bin110010010011001111
3101110121210
4302103033
523043111
64225503
71515450
oct622317
9343553
10206031
11130881
129b293
1372a17
1455127
15410a6
hex324cf

206031 has 8 divisors (see below), whose sum is σ = 313984. Its totient is φ = 117720.

The previous prime is 206027. The next prime is 206033. The reversal of 206031 is 130602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206031 - 22 = 206027 is a prime.

It is a super-2 number, since 2×2060312 = 84897545922, 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 = 205998 and 206016.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 206031.

It is not an unprimeable number, because it can be changed into a prime (206033) 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, 4885 + ... + 4926.

It is an arithmetic number, because the mean of its divisors is an integer number (39248).

2206031 is an apocalyptic number.

206031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

206031 is a deficient number, since it is larger than the sum of its proper divisors (107953).

206031 is an equidigital number, since it uses as much as digits as its factorization.

206031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9821.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 206031 is about 453.9063780120. The cubic root of 206031 is about 59.0623682145.

Adding to 206031 its reverse (130602), we get a palindrome (336633).

The spelling of 206031 in words is "two hundred six thousand, thirty-one".

Divisors: 1 3 7 21 9811 29433 68677 206031