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231115108 = 227103127631
BaseRepresentation
bin11011100011010…
…00100101100100
3121002212212022211
431301220211210
5433131140413
634533333204
75504305660
oct1561504544
9532785284
10231115108
11109505224
1265497204
1338b5ca03
14229a18a0
151545383d
hexdc68964

231115108 has 48 divisors (see below), whose sum is σ = 471138304. Its totient is φ = 97161120.

The previous prime is 231115097. The next prime is 231115133. The reversal of 231115108 is 801511132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365953 + ... + 366583.

Almost surely, 2231115108 is an apocalyptic number.

231115108 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231115108 is an abundant number, since it is smaller than the sum of its proper divisors (240023196).

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

231115108 is a wasteful number, since it uses less digits than its factorization.

231115108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 231115108 is about 15202.4704571329. The cubic root of 231115108 is about 613.6811431747.

The spelling of 231115108 in words is "two hundred thirty-one million, one hundred fifteen thousand, one hundred eight".

Divisors: 1 2 4 7 14 28 103 127 206 254 412 508 631 721 889 1262 1442 1778 2524 2884 3556 4417 8834 13081 17668 26162 52324 64993 80137 91567 129986 160274 183134 259972 320548 366268 454951 560959 909902 1121918 1819804 2243836 8254111 16508222 33016444 57778777 115557554 231115108