315121300 has 72 divisors (see below), whose sum is σ = 740397056. Its totient is φ = 115724160.

The previous prime is 315121259. The next prime is 315121307. The reversal of 315121300 is 3121513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315121307) 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 23 ways as a sum of consecutive naturals, for example, 289357 + ... + 290443.

Almost surely, 2^315121300 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 315121300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370198528).

315121300 is an abundant number, since it is smaller than the sum of its proper divisors (425275756).

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

315121300 is a wasteful number, since it uses less digits than its factorization.

315121300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 315121300 is about 17751.6562607549. The cubic root of 315121300 is about 680.4965375696.

Adding to 315121300 its reverse (3121513), we get a palindrome (318242813).

The spelling of 315121300 in words is "three hundred fifteen million, one hundred twenty-one thousand, three hundred".