Bonds issued pursuant to this title are a legal investment for any state special fund or trust fund, notwithstanding any provision of state or local law limiting the investments that may be made by the fund. The bonds shall be legal investments in which all public officers and public bodies of the state and its political subdivisions, all municipalities and municipal subdivisions, all insurance companies and associations and other persons carrying on an insurance business, all banks, bankers, banking institutions, including savings and loan associations, building and loan associations, trust companies, savings banks and savings associations, investment companies, and other persons carrying on banking business, all administrators, guardians, executors, trustees, and other fiduciaries, and all persons authorized to invest in bonds or other obligations of the state, may properly and legally invest funds, including capital, in their control or belonging to them. The bonds may be used by any such private financial institution, person, or association as security for public officers and bodies of the state or any agency or political subdivision of the state and all municipalities and public corporations for any purpose for which the deposit of bonds or other obligations of the state is authorized by law, including deposits to secure public funds.