316220988 has 48 divisors (see below), whose sum is σ = 766846080. Its totient is φ = 101298624.

The previous prime is 316220977. The next prime is 316221019. The reversal of 316220988 is 889022613.

It is a happy number.

It is a super-2 number, since 2×316220988² = 199991426503392288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76995 + ... + 80997.

It is an arithmetic number, because the mean of its divisors is an integer number (15975960).

Almost surely, 2^316220988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 316220988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383423040).

316220988 is an abundant number, since it is smaller than the sum of its proper divisors (450625092).

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

316220988 is a wasteful number, since it uses less digits than its factorization.

316220988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 4264 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 316220988 is about 17782.6035214195. The cubic root of 316220988 is about 681.2872014250.

The spelling of 316220988 in words is "three hundred sixteen million, two hundred twenty thousand, nine hundred eighty-eight".