313115216 has 10 divisors (see below), whose sum is σ = 606660762. Its totient is φ = 156557600.

The previous prime is 313115191. The next prime is 313115219. The reversal of 313115216 is 612511313.

It can be written as a sum of positive squares in only one way, i.e., 171505216 + 141610000 = 13096^2 + 11900^2 .

It is a super-2 number, since 2×313115216² = 196082276981453312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313115191 and 313115200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313115219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9784835 + ... + 9784866.

Almost surely, 2^313115216 is an apocalyptic number.

It is an amenable number.

313115216 is a deficient number, since it is larger than the sum of its proper divisors (293545546).

313115216 is a wasteful number, since it uses less digits than its factorization.

313115216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19569709 (or 19569703 counting only the distinct ones).

The product of its digits is 540, while the sum is 23.

The square root of 313115216 is about 17695.0619100358. The cubic root of 313115216 is about 679.0494330744.

Adding to 313115216 its reverse (612511313), we get a palindrome (925626529).

The spelling of 313115216 in words is "three hundred thirteen million, one hundred fifteen thousand, two hundred sixteen".