313312220 has 24 divisors (see below), whose sum is σ = 708568224. Its totient is φ = 115684416.

The previous prime is 313312217. The next prime is 313312247. The reversal of 313312220 is 22213313.

It is a congruent 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, 602264 + ... + 602783.

It is an arithmetic number, because the mean of its divisors is an integer number (29523676).

Almost surely, 2^313312220 is an apocalyptic number.

It is an amenable number.

313312220 is an abundant number, since it is smaller than the sum of its proper divisors (395256004).

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

313312220 is a wasteful number, since it uses less digits than its factorization.

313312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205069 (or 1205067 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 313312220 is about 17700.6276724866. The cubic root of 313312220 is about 679.1918166673.

Adding to 313312220 its reverse (22213313), we get a palindrome (335525533).

The spelling of 313312220 in words is "three hundred thirteen million, three hundred twelve thousand, two hundred twenty".