315231330 has 64 divisors (see below), whose sum is σ = 799580160. Its totient is φ = 79375296.

The previous prime is 315231311. The next prime is 315231331. The reversal of 315231330 is 33132513.

315231330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 315231297 and 315231306.

It is not an unprimeable number, because it can be changed into a prime (315231331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51619 + ... + 57401.

It is an arithmetic number, because the mean of its divisors is an integer number (12493440).

Almost surely, 2^315231330 is an apocalyptic number.

315231330 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 315231330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399790080).

315231330 is an abundant number, since it is smaller than the sum of its proper divisors (484348830).

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

315231330 is a wasteful number, since it uses less digits than its factorization.

315231330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5895.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 315231330 is about 17754.7551377089. The cubic root of 315231330 is about 680.5757306941.

Adding to 315231330 its reverse (33132513), we get a palindrome (348363843).

The spelling of 315231330 in words is "three hundred fifteen million, two hundred thirty-one thousand, three hundred thirty".