316039220 has 72 divisors (see below), whose sum is σ = 776431656. Its totient is φ = 107740416.

The previous prime is 316039219. The next prime is 316039261. The reversal of 316039220 is 22930613.

It can be written as a sum of positive squares in 4 ways, for example, as 34739236 + 281299984 = 5894^2 + 16772^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 316039220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192242 + ... + 193878.

It is an arithmetic number, because the mean of its divisors is an integer number (10783773).

Almost surely, 2^316039220 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 316039220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388215828).

316039220 is an abundant number, since it is smaller than the sum of its proper divisors (460392436).

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

316039220 is a wasteful number, since it uses less digits than its factorization.

316039220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1848 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 316039220 is about 17777.4919490911. The cubic root of 316039220 is about 681.1566387785.

Adding to 316039220 its reverse (22930613), we get a palindrome (338969833).

The spelling of 316039220 in words is "three hundred sixteen million, thirty-nine thousand, two hundred twenty".