313243420 has 48 divisors (see below), whose sum is σ = 759261888. Its totient is φ = 106329600.

The previous prime is 313243397. The next prime is 313243423. The reversal of 313243420 is 24342313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 313243391 and 313243400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313243423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3064 + ... + 25216.

It is an arithmetic number, because the mean of its divisors is an integer number (15817956).

Almost surely, 2^313243420 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 313243420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379630944).

313243420 is an abundant number, since it is smaller than the sum of its proper divisors (446018468).

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

313243420 is a wasteful number, since it uses less digits than its factorization.

313243420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22270 (or 22268 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 313243420 is about 17698.6841318783. The cubic root of 313243420 is about 679.1420986174.

Adding to 313243420 its reverse (24342313), we get a palindrome (337585733).

The spelling of 313243420 in words is "three hundred thirteen million, two hundred forty-three thousand, four hundred twenty".