All cross sections of neutron-induced reactions, angular distributions, energy spectra, and double-differential cross sections for n + 113,115,nat.In reactions are consistently calculated and analyzed at incident neutron energies below 200 MeV by using nuclear theoretical models. The isomeric cross section is especially calculated. The theoretical results are further compared with the available experimental data and the evaluated results in ENDF/B-VII, JENDL-4, and TENDL-2012.