316397220 has 24 divisors (see below), whose sum is σ = 885912384. Its totient is φ = 84372576.

The previous prime is 316397209. The next prime is 316397267. The reversal of 316397220 is 22793613.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2636584 + ... + 2636703.

It is an arithmetic number, because the mean of its divisors is an integer number (36913016).

Almost surely, 2^316397220 is an apocalyptic number.

316397220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

316397220 is an abundant number, since it is smaller than the sum of its proper divisors (569515164).

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

316397220 is a wasteful number, since it uses less digits than its factorization.

316397220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273299 (or 5273297 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 316397220 is about 17787.5580111493. The cubic root of 316397220 is about 681.4137398409.

The spelling of 316397220 in words is "three hundred sixteen million, three hundred ninety-seven thousand, two hundred twenty".