313805380 has 96 divisors (see below), whose sum is σ = 808012800. Its totient is φ = 99919872.

The previous prime is 313805369. The next prime is 313805389. The reversal of 313805380 is 83508313.

It is not an unprimeable number, because it can be changed into a prime (313805389) 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 in 31 ways as a sum of consecutive naturals, for example, 187186 + ... + 188854.

It is an arithmetic number, because the mean of its divisors is an integer number (8416800).

Almost surely, 2^313805380 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 313805380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404006400).

313805380 is an abundant number, since it is smaller than the sum of its proper divisors (494207420).

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

313805380 is a wasteful number, since it uses less digits than its factorization.

313805380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 313805380 is about 17714.5527744846. The cubic root of 313805380 is about 679.5479839119.

The spelling of 313805380 in words is "three hundred thirteen million, eight hundred five thousand, three hundred eighty".