BERLIN, Aug 31 (Reuters) - Bertelsmann has the financial firepower to invest 2-3 billion euros ($2.4-$3.6 billion) in acquisitions, CEO Thomas Rabe said on Tuesday after the German publishing group posted strong first-half results.

Rabe also confirmed a report that an initial public offering of call-centre business Majorel - a 50-50 joint venture with Moroccan partner Saham - was under consideration but said no decision had been taken on timing. ($1 = 0.8457 euros) (Reporting by Douglas Busvine Editing by Riham Alkousaa)