312230144 has 18 divisors (see below), whose sum is σ = 623241150. Its totient is φ = 156114944.

The previous prime is 312230141. The next prime is 312230159. The reversal of 312230144 is 441032213.

It can be written as a sum of positive squares in only one way, i.e., 286015744 + 26214400 = 16912^2 + 5120^2 .

It is not an unprimeable number, because it can be changed into a prime (312230141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609569 + ... + 610080.

Almost surely, 2^312230144 is an apocalyptic number.

It is an amenable number.

312230144 is a deficient number, since it is larger than the sum of its proper divisors (311011006).

312230144 is an equidigital number, since it uses as much as digits as its factorization.

312230144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219665 (or 1219651 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 312230144 is about 17670.0352008704. The cubic root of 312230144 is about 678.4090140608.

Adding to 312230144 its reverse (441032213), we get a palindrome (753262357).

The spelling of 312230144 in words is "three hundred twelve million, two hundred thirty thousand, one hundred forty-four".