Search a number
-
+
203130108 = 223243131221
BaseRepresentation
bin11000001101110…
…00010011111100
3112011020002010100
430012320103330
5404000130413
632053441100
75014402026
oct1406702374
9464202110
10203130108
11a4730725
1258040190
1333111c3c
141cd99016
1512c76a73
hexc1b84fc

203130108 has 36 divisors (see below), whose sum is σ = 525412888. Its totient is φ = 66134880.

The previous prime is 203130107. The next prime is 203130139. The reversal of 203130108 is 801031302.

203130108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203130101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64063 + ... + 67158.

Almost surely, 2203130108 is an apocalyptic number.

It is an amenable number.

203130108 is an abundant number, since it is smaller than the sum of its proper divisors (322282780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203130108 is a wasteful number, since it uses less digits than its factorization.

203130108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131274 (or 131269 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 203130108 is about 14252.3720131072. The cubic root of 203130108 is about 587.8385993217.

The spelling of 203130108 in words is "two hundred three million, one hundred thirty thousand, one hundred eight".

Divisors: 1 2 3 4 6 9 12 18 36 43 86 129 172 258 387 516 774 1548 131221 262442 393663 524884 787326 1180989 1574652 2361978 4723956 5642503 11285006 16927509 22570012 33855018 50782527 67710036 101565054 203130108