315147784530 has 128 divisors (see below), whose sum is σ = 796946895360. Its totient is φ = 79653058560.

The previous prime is 315147784499. The next prime is 315147784537. The reversal of 315147784530 is 35487741513.

It is a self number, because there is not a number n which added to its sum of digits gives 315147784530.

It is not an unprimeable number, because it can be changed into a prime (315147784537) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32261707 + ... + 32271473.

It is an arithmetic number, because the mean of its divisors is an integer number (6226147620).

Almost surely, 2^315147784530 is an apocalyptic number.

315147784530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 315147784530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398473447680).

315147784530 is an abundant number, since it is smaller than the sum of its proper divisors (481799110830).

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

315147784530 is a wasteful number, since it uses less digits than its factorization.

315147784530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10564.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 315147784530 in words is "three hundred fifteen billion, one hundred forty-seven million, seven hundred eighty-four thousand, five hundred thirty".