312040303 has 4 divisors (see below), whose sum is σ = 312095680. Its totient is φ = 311984928.

The previous prime is 312040291. The next prime is 312040307. The reversal of 312040303 is 303040213.

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 312040303 - 2⁵ = 312040271 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 (312040307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18138 + ... + 30871.

It is an arithmetic number, because the mean of its divisors is an integer number (78023920).

Almost surely, 2^312040303 is an apocalyptic number.

312040303 is a deficient number, since it is larger than the sum of its proper divisors (55377).

312040303 is an equidigital number, since it uses as much as digits as its factorization.

312040303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55376.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 312040303 is about 17664.6625498479. The cubic root of 312040303 is about 678.2714916178.

Adding to 312040303 its reverse (303040213), we get a palindrome (615080516).

The spelling of 312040303 in words is "three hundred twelve million, forty thousand, three hundred three".