315421280 has 96 divisors (see below), whose sum is σ = 809948160. Its totient is φ = 115637760.

The previous prime is 315421273. The next prime is 315421289. The reversal of 315421280 is 82124513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315421289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92567 + ... + 95913.

It is an arithmetic number, because the mean of its divisors is an integer number (8436960).

Almost surely, 2^315421280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315421280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404974080).

315421280 is an abundant number, since it is smaller than the sum of its proper divisors (494526880).

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

315421280 is a wasteful number, since it uses less digits than its factorization.

315421280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412 (or 3404 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 315421280 is about 17760.1036033014. The cubic root of 315421280 is about 680.7124021800.

Adding to 315421280 its reverse (82124513), we get a palindrome (397545793).

The spelling of 315421280 in words is "three hundred fifteen million, four hundred twenty-one thousand, two hundred eighty".