312243142303 has 4 divisors (see below), whose sum is σ = 323010147240. Its totient is φ = 301476137368.

The previous prime is 312243142301. The next prime is 312243142349. The reversal of 312243142303 is 303241342213.

It is a happy number.

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 312243142303 - 2¹ = 312243142301 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 (312243142301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5383502425 + ... + 5383502482.

It is an arithmetic number, because the mean of its divisors is an integer number (80752536810).

Almost surely, 2^312243142303 is an apocalyptic number.

312243142303 is a deficient number, since it is larger than the sum of its proper divisors (10767004937).

312243142303 is a wasteful number, since it uses less digits than its factorization.

312243142303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767004936.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 312243142303 its reverse (303241342213), we get a palindrome (615484484516).

The spelling of 312243142303 in words is "three hundred twelve billion, two hundred forty-three million, one hundred forty-two thousand, three hundred three".