312500000 has 66 divisors (see below), whose sum is σ = 769042953. Its totient is φ = 125000000.

The previous prime is 312499987. The next prime is 312500017. The reversal of 312500000 is 5213.

It is a perfect power (a 5-th power), and thus also a powerful number.

It can be written as a sum of positive squares in 6 ways, for example, as 179881744 + 132618256 = 13412^2 + 11516^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=12500.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 10 ways as a sum of consecutive naturals, for example, 62499998 + ... + 62500002.

Almost surely, 2^312500000 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 312500000

312500000 is an abundant number, since it is smaller than the sum of its proper divisors (456542953).

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

312500000 is an frugal number, since it uses more digits than its factorization.

312500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 312500000 is about 17677.6695296637. The cubic root of 312500000 is about 678.6044041487.

Adding to 312500000 its reverse (5213), we get a palindrome (312505213).

The spelling of 312500000 in words is "three hundred twelve million, five hundred thousand".