315432220 has 24 divisors (see below), whose sum is σ = 673269408. Its totient is φ = 124104000.

The previous prime is 315432151. The next prime is 315432233. The reversal of 315432220 is 22234513.

It is a junction number, because it is equal to n+sod(n) for n = 315432191 and 315432200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128056 + ... + 130495.

It is an arithmetic number, because the mean of its divisors is an integer number (28052892).

Almost surely, 2^315432220 is an apocalyptic number.

It is an amenable number.

315432220 is an abundant number, since it is smaller than the sum of its proper divisors (357837188).

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

315432220 is a wasteful number, since it uses less digits than its factorization.

315432220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258621 (or 258619 counting only the distinct ones).

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

The square root of 315432220 is about 17760.4115943297. The cubic root of 315432220 is about 680.7202719804.

Adding to 315432220 its reverse (22234513), we get a palindrome (337666733).

The spelling of 315432220 in words is "three hundred fifteen million, four hundred thirty-two thousand, two hundred twenty".