315423220 has 24 divisors (see below), whose sum is σ = 757016064. Its totient is φ = 108145056.

The previous prime is 315423197. The next prime is 315423271. The reversal of 315423220 is 22324513.

It is a junction number, because it is equal to n+sod(n) for n = 315423191 and 315423200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126372 + ... + 1126651.

It is an arithmetic number, because the mean of its divisors is an integer number (31542336).

Almost surely, 2^315423220 is an apocalyptic number.

It is an amenable number.

315423220 is an abundant number, since it is smaller than the sum of its proper divisors (441592844).

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

315423220 is a wasteful number, since it uses less digits than its factorization.

315423220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253039 (or 2253037 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 315423220 is about 17760.1582200159. The cubic root of 315423220 is about 680.7137977520.

Adding to 315423220 its reverse (22324513), we get a palindrome (337747733).

The spelling of 315423220 in words is "three hundred fifteen million, four hundred twenty-three thousand, two hundred twenty".