313420340 has 24 divisors (see below), whose sum is σ = 675973032. Its totient is φ = 121979520.

The previous prime is 313420339. The next prime is 313420343. The reversal of 313420340 is 43024313.

It can be written as a sum of positive squares in 4 ways, for example, as 27269284 + 286151056 = 5222^2 + 16916^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313420343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211031 + ... + 212510.

It is an arithmetic number, because the mean of its divisors is an integer number (28165543).

Almost surely, 2^313420340 is an apocalyptic number.

It is an amenable number.

313420340 is an abundant number, since it is smaller than the sum of its proper divisors (362552692).

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

313420340 is a wasteful number, since it uses less digits than its factorization.

313420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423587 (or 423585 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 313420340 is about 17703.6815380304. The cubic root of 313420340 is about 679.2699344564.

Adding to 313420340 its reverse (43024313), we get a palindrome (356444653).

The spelling of 313420340 in words is "three hundred thirteen million, four hundred twenty thousand, three hundred forty".