312030321 has 16 divisors (see below), whose sum is σ = 426086400. Its totient is φ = 203022288.

The previous prime is 312030289. The next prime is 312030337. The reversal of 312030321 is 123030213.

It is not a de Polignac number, because 312030321 - 2⁵ = 312030289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312030321.

It is not an unprimeable number, because it can be changed into a prime (312030421) 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 15 ways as a sum of consecutive naturals, for example, 50520 + ... + 56358.

It is an arithmetic number, because the mean of its divisors is an integer number (26630400).

Almost surely, 2^312030321 is an apocalyptic number.

It is an amenable number.

312030321 is a deficient number, since it is larger than the sum of its proper divisors (114056079).

312030321 is a wasteful number, since it uses less digits than its factorization.

312030321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6268.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 312030321 is about 17664.3800061027. The cubic root of 312030321 is about 678.2642590283.

Subtracting from 312030321 its product of nonzero digits (108), we obtain a palindrome (312030213).

Adding to 312030321 its reverse (123030213), we get a palindrome (435060534).

The spelling of 312030321 in words is "three hundred twelve million, thirty thousand, three hundred twenty-one".