313173220 has 48 divisors (see below), whose sum is σ = 674085888. Its totient is φ = 122161280.

The previous prime is 313173199. The next prime is 313173229. The reversal of 313173220 is 22371313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 313173191 and 313173200.

It is not an unprimeable number, because it can be changed into a prime (313173229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404754 + ... + 405526.

It is an arithmetic number, because the mean of its divisors is an integer number (14043456).

Almost surely, 2^313173220 is an apocalyptic number.

It is an amenable number.

313173220 is an abundant number, since it is smaller than the sum of its proper divisors (360912668).

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

313173220 is a wasteful number, since it uses less digits than its factorization.

313173220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 313173220 is about 17696.7008224697. The cubic root of 313173220 is about 679.0913613588.

The spelling of 313173220 in words is "three hundred thirteen million, one hundred seventy-three thousand, two hundred twenty".