315421432 has 32 divisors (see below), whose sum is σ = 628617600. Its totient is φ = 147952224.

The previous prime is 315421427. The next prime is 315421433. The reversal of 315421432 is 234124513.

It is a junction number, because it is equal to n+sod(n) for n = 315421397 and 315421406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315421433) 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, 5583 + ... + 25729.

It is an arithmetic number, because the mean of its divisors is an integer number (19644300).

Almost surely, 2^315421432 is an apocalyptic number.

It is an amenable number.

315421432 is a deficient number, since it is larger than the sum of its proper divisors (313196168).

315421432 is a wasteful number, since it uses less digits than its factorization.

315421432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20275 (or 20271 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 315421432 is about 17760.1078825552. The cubic root of 315421432 is about 680.7125115240.

Adding to 315421432 its reverse (234124513), we get a palindrome (549545945).

The spelling of 315421432 in words is "three hundred fifteen million, four hundred twenty-one thousand, four hundred thirty-two".