313615720 has 64 divisors (see below), whose sum is σ = 772208640. Its totient is φ = 113683200.

The previous prime is 313615717. The next prime is 313615721. The reversal of 313615720 is 27516313.

It is a super-2 number, since 2×313615720² = 196709639662236800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313615721) 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, 167590 + ... + 169450.

It is an arithmetic number, because the mean of its divisors is an integer number (12065760).

Almost surely, 2^313615720 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 313615720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386104320).

313615720 is an abundant number, since it is smaller than the sum of its proper divisors (458592920).

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

313615720 is a wasteful number, since it uses less digits than its factorization.

313615720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 313615720 is about 17709.1987396381. The cubic root of 313615720 is about 679.4110529214.

The spelling of 313615720 in words is "three hundred thirteen million, six hundred fifteen thousand, seven hundred twenty".