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203668137 = 3222629793
BaseRepresentation
bin11000010001110…
…11101010101001
3112012020102011100
430020323222221
5404114340022
632113152013
75022102441
oct1410735251
9465212140
10203668137
11a4a68982
125825b609
133326caba
141d099121
1512d311ac
hexc23baa9

203668137 has 6 divisors (see below), whose sum is σ = 294187322. Its totient is φ = 135778752.

The previous prime is 203668133. The next prime is 203668159. The reversal of 203668137 is 731866302.

It is a happy number.

203668137 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 only one way, i.e., 189447696 + 14220441 = 13764^2 + 3771^2 .

It is not a de Polignac number, because 203668137 - 22 = 203668133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203668133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11314888 + ... + 11314905.

Almost surely, 2203668137 is an apocalyptic number.

It is an amenable number.

203668137 is a deficient number, since it is larger than the sum of its proper divisors (90519185).

203668137 is a wasteful number, since it uses less digits than its factorization.

203668137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22629799 (or 22629796 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 203668137 is about 14271.2345997114. The cubic root of 203668137 is about 588.3571428133.

The spelling of 203668137 in words is "two hundred three million, six hundred sixty-eight thousand, one hundred thirty-seven".

Divisors: 1 3 9 22629793 67889379 203668137