315305021320 has 32 divisors (see below), whose sum is σ = 732321342720. Its totient is φ = 122053556160.

The previous prime is 315305021309. The next prime is 315305021327. The reversal of 315305021320 is 23120503513.

It is not an unprimeable number, because it can be changed into a prime (315305021327) 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, 127137882 + ... + 127140361.

It is an arithmetic number, because the mean of its divisors is an integer number (22885041960).

Almost surely, 2^315305021320 is an apocalyptic number.

It is an amenable number.

315305021320 is an abundant number, since it is smaller than the sum of its proper divisors (417016321400).

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

315305021320 is a wasteful number, since it uses less digits than its factorization.

315305021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254278285 (or 254278281 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 315305021320 its reverse (23120503513), we get a palindrome (338425524833).

The spelling of 315305021320 in words is "three hundred fifteen billion, three hundred five million, twenty-one thousand, three hundred twenty".