315242340 has 96 divisors (see below), whose sum is σ = 1014263040. Its totient is φ = 71663616.

The previous prime is 315242329. The next prime is 315242353. The reversal of 315242340 is 43242513.

It is a self number, because there is not a number n which added to its sum of digits gives 315242340.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79116 + ... + 83004.

It is an arithmetic number, because the mean of its divisors is an integer number (10565240).

Almost surely, 2^315242340 is an apocalyptic number.

315242340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315242340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507131520).

315242340 is an abundant number, since it is smaller than the sum of its proper divisors (699020700).

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

315242340 is a wasteful number, since it uses less digits than its factorization.

315242340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101 (or 4099 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 315242340 is about 17755.0651927837. The cubic root of 315242340 is about 680.5836540305.

Adding to 315242340 its reverse (43242513), we get a palindrome (358484853).

The spelling of 315242340 in words is "three hundred fifteen million, two hundred forty-two thousand, three hundred forty".