315940240 has 240 divisors, whose sum is σ = 989293824. Its totient is φ = 92467200.

The previous prime is 315940237. The next prime is 315940267. The reversal of 315940240 is 42049513.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 315940199 and 315940208.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 732825 + ... + 733255.

Almost surely, 2^315940240 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 315940240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494646912).

315940240 is an abundant number, since it is smaller than the sum of its proper divisors (673353584).

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

315940240 is a wasteful number, since it uses less digits than its factorization.

315940240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 315940240 is about 17774.7078738302. The cubic root of 315940240 is about 681.0855211033.

Adding to 315940240 its reverse (42049513), we get a palindrome (357989753).

The spelling of 315940240 in words is "three hundred fifteen million, nine hundred forty thousand, two hundred forty".