312304243 has 8 divisors (see below), whose sum is σ = 315456480. Its totient is φ = 309167040.

The previous prime is 312304211. The next prime is 312304253. The reversal of 312304243 is 342403213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312304243 - 2⁵ = 312304211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312304253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40578 + ... + 47656.

It is an arithmetic number, because the mean of its divisors is an integer number (39432060).

Almost surely, 2^312304243 is an apocalyptic number.

312304243 is a deficient number, since it is larger than the sum of its proper divisors (3152237).

312304243 is a wasteful number, since it uses less digits than its factorization.

312304243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 312304243 is about 17672.1318182046. The cubic root of 312304243 is about 678.4626768844.

Adding to 312304243 its reverse (342403213), we get a palindrome (654707456).

The spelling of 312304243 in words is "three hundred twelve million, three hundred four thousand, two hundred forty-three".