315321340 has 48 divisors (see below), whose sum is σ = 699743520. Its totient is φ = 119024640.

The previous prime is 315321313. The next prime is 315321341. The reversal of 315321340 is 43123513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315321341) 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, 105304 + ... + 108256.

It is an arithmetic number, because the mean of its divisors is an integer number (14577990).

Almost surely, 2^315321340 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 315321340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349871760).

315321340 is an abundant number, since it is smaller than the sum of its proper divisors (384422180).

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

315321340 is a wasteful number, since it uses less digits than its factorization.

315321340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262 (or 3260 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 315321340 is about 17757.2897706829. The cubic root of 315321340 is about 680.6405008973.

Adding to 315321340 its reverse (43123513), we get a palindrome (358444853).

The spelling of 315321340 in words is "three hundred fifteen million, three hundred twenty-one thousand, three hundred forty".