315128900 has 36 divisors (see below), whose sum is σ = 685672260. Its totient is φ = 125712000.

The previous prime is 315128899. The next prime is 315128903. The reversal of 315128900 is 9821513.

It can be written as a sum of positive squares in 6 ways, for example, as 3182656 + 311946244 = 1784^2 + 17662^2 .

It is not an unprimeable number, because it can be changed into a prime (315128903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34850 + ... + 42950.

Almost surely, 2^315128900 is an apocalyptic number.

It is an amenable number.

315128900 is an abundant number, since it is smaller than the sum of its proper divisors (370543360).

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

315128900 is a wasteful number, since it uses less digits than its factorization.

315128900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8504 (or 8497 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 315128900 is about 17751.8703239968. The cubic root of 315128900 is about 680.5020081953.

The spelling of 315128900 in words is "three hundred fifteen million, one hundred twenty-eight thousand, nine hundred".