312204030503 has 4 divisors (see below), whose sum is σ = 313356075168. Its totient is φ = 311051985840.

The previous prime is 312204030499. The next prime is 312204030553. The reversal of 312204030503 is 305030402213.

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

It is a cyclic number.

It is not a de Polignac number, because 312204030503 - 2² = 312204030499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312204030553) 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, 576021926 + ... + 576022467.

It is an arithmetic number, because the mean of its divisors is an integer number (78339018792).

Almost surely, 2^312204030503 is an apocalyptic number.

312204030503 is a deficient number, since it is larger than the sum of its proper divisors (1152044665).

312204030503 is a wasteful number, since it uses less digits than its factorization.

312204030503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152044664.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 312204030503 its reverse (305030402213), we get a palindrome (617234432716).

The spelling of 312204030503 in words is "three hundred twelve billion, two hundred four million, thirty thousand, five hundred three".