312021230203 has 4 divisors (see below), whose sum is σ = 312890370480. Its totient is φ = 311152089928.

The previous prime is 312021230173. The next prime is 312021230239. The reversal of 312021230203 is 302032120213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312021230203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312021230503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434569600 + ... + 434570317.

It is an arithmetic number, because the mean of its divisors is an integer number (78222592620).

Almost surely, 2^312021230203 is an apocalyptic number.

312021230203 is a deficient number, since it is larger than the sum of its proper divisors (869140277).

312021230203 is an equidigital number, since it uses as much as digits as its factorization.

312021230203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869140276.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 312021230203 its reverse (302032120213), we get a palindrome (614053350416).

The spelling of 312021230203 in words is "three hundred twelve billion, twenty-one million, two hundred thirty thousand, two hundred three".