312500244 has 72 divisors (see below), whose sum is σ = 857115840. Its totient is φ = 88349184.

The previous prime is 312500213. The next prime is 312500269. The reversal of 312500244 is 442005213.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 312500244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54297 + ... + 59775.

Almost surely, 2^312500244 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 312500244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428557920).

312500244 is an abundant number, since it is smaller than the sum of its proper divisors (544615596).

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

312500244 is a wasteful number, since it uses less digits than its factorization.

312500244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597 (or 5588 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 312500244 is about 17677.6764310245. The cubic root of 312500244 is about 678.6045807668.

Adding to 312500244 its reverse (442005213), we get a palindrome (754505457).

The spelling of 312500244 in words is "three hundred twelve million, five hundred thousand, two hundred forty-four".