You have more than one option available to you in how a life insurance death benefit is paid to policy beneficiaries.
This is the simplest of the death benefit payments. The entire death benefit is bestowed at once, in a single payment.
With this settlement, the insurance company retains the death benefit but periodically pays the beneficiary interest on it. Optionally, the beneficiary can take part of the death benefit and leave the rest with the insurance company for interest.
The life insurance company makes regular payments of a portion of the death benefit, plus interest, until the end of the period, at which time the death benefit shall have been paid out in entirety. The interest rate is set at the time of death.
The life insurance company makes payments of a particular amount, at a particular period. Meanwhile, the death benefit accrues interest. Payments continue until the death benefit (plus its interest) is exhausted.
The death benefit purchases a life annuity for the beneficiary or beneficiaries. That is, a steady income stream is created for each beneficiary, to continue until the beneficiary dies. The size of the payments depends on the gender and age of each beneficiary.