312343403 has 4 divisors (see below), whose sum is σ = 312393840. Its totient is φ = 312292968.

The previous prime is 312343399. The next prime is 312343411. The reversal of 312343403 is 304343213.

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 312343403 - 2² = 312343399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312343103) 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, 14375 + ... + 28832.

It is an arithmetic number, because the mean of its divisors is an integer number (78098460).

Almost surely, 2^312343403 is an apocalyptic number.

312343403 is a deficient number, since it is larger than the sum of its proper divisors (50437).

312343403 is an equidigital number, since it uses as much as digits as its factorization.

312343403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50436.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 312343403 is about 17673.2397426165. The cubic root of 312343403 is about 678.4910333014.

Adding to 312343403 its reverse (304343213), we get a palindrome (616686616).

The spelling of 312343403 in words is "three hundred twelve million, three hundred forty-three thousand, four hundred three".