315215025132 has 48 divisors (see below), whose sum is σ = 842396873472. Its totient is φ = 89866063680.

The previous prime is 315215025131. The next prime is 315215025137. The reversal of 315215025132 is 231520512513.

It is a self number, because there is not a number n which added to its sum of digits gives 315215025132.

It is not an unprimeable number, because it can be changed into a prime (315215025131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4031298 + ... + 4108745.

It is an arithmetic number, because the mean of its divisors is an integer number (17549934864).

Almost surely, 2^315215025132 is an apocalyptic number.

It is an amenable number.

315215025132 is an abundant number, since it is smaller than the sum of its proper divisors (527181848340).

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

315215025132 is a wasteful number, since it uses less digits than its factorization.

315215025132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8140518 (or 8140516 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 315215025132 its reverse (231520512513), we get a palindrome (546735537645).

The spelling of 315215025132 in words is "three hundred fifteen billion, two hundred fifteen million, twenty-five thousand, one hundred thirty-two".