315430420 has 24 divisors (see below), whose sum is σ = 669236904. Its totient is φ = 124870656.

The previous prime is 315430417. The next prime is 315430421. The reversal of 315430420 is 24034513.

It can be written as a sum of positive squares in 4 ways, for example, as 5740816 + 309689604 = 2396^2 + 17598^2 .

It is a super-2 number, since 2×315430420² = 198992699722752800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315430391 and 315430400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315430421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79357 + ... + 83236.

It is an arithmetic number, because the mean of its divisors is an integer number (27884871).

Almost surely, 2^315430420 is an apocalyptic number.

It is an amenable number.

315430420 is an abundant number, since it is smaller than the sum of its proper divisors (353806484).

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

315430420 is a wasteful number, since it uses less digits than its factorization.

315430420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162699 (or 162697 counting only the distinct ones).

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

The square root of 315430420 is about 17760.3609197561. The cubic root of 315430420 is about 680.7189771446.

Adding to 315430420 its reverse (24034513), we get a palindrome (339464933).

The spelling of 315430420 in words is "three hundred fifteen million, four hundred thirty thousand, four hundred twenty".