313320720 has 160 divisors (see below), whose sum is σ = 1046790144. Its totient is φ = 77299200.

The previous prime is 313320713. The next prime is 313320797. The reversal of 313320720 is 27023313.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170205 + ... + 172035.

Almost surely, 2^313320720 is an apocalyptic number.

313320720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313320720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523395072).

313320720 is an abundant number, since it is smaller than the sum of its proper divisors (733469424).

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

313320720 is a wasteful number, since it uses less digits than its factorization.

313320720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 313320720 is about 17700.8677753380. The cubic root of 313320720 is about 679.1979586537.

The spelling of 313320720 in words is "three hundred thirteen million, three hundred twenty thousand, seven hundred twenty".