312444321 has 32 divisors (see below), whose sum is σ = 490152960. Its totient is φ = 173323584.

The previous prime is 312444311. The next prime is 312444323. The reversal of 312444321 is 123444213.

It is not a de Polignac number, because 312444321 - 2⁷ = 312444193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312444291 and 312444300.

It is not an unprimeable number, because it can be changed into a prime (312444323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160671 + ... + 162603.

It is an arithmetic number, because the mean of its divisors is an integer number (15317280).

Almost surely, 2^312444321 is an apocalyptic number.

It is an amenable number.

312444321 is a deficient number, since it is larger than the sum of its proper divisors (177708639).

312444321 is a wasteful number, since it uses less digits than its factorization.

312444321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165.

The product of its digits is 2304, while the sum is 24.

The square root of 312444321 is about 17676.0946195702. The cubic root of 312444321 is about 678.5640988059.

Adding to 312444321 its reverse (123444213), we get a palindrome (435888534).

The spelling of 312444321 in words is "three hundred twelve million, four hundred forty-four thousand, three hundred twenty-one".