312042103 has 4 divisors (see below), whose sum is σ = 319652928. Its totient is φ = 304431280.

The previous prime is 312042083. The next prime is 312042109. The reversal of 312042103 is 301240213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301240213 = 2179 ⋅138247.

It is a cyclic number.

It is not a de Polignac number, because 312042103 - 2¹⁷ = 311911031 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 (312042109) 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, 3805351 + ... + 3805432.

It is an arithmetic number, because the mean of its divisors is an integer number (79913232).

Almost surely, 2^312042103 is an apocalyptic number.

312042103 is a deficient number, since it is larger than the sum of its proper divisors (7610825).

312042103 is an equidigital number, since it uses as much as digits as its factorization.

312042103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7610824.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 312042103 is about 17664.7134989504. The cubic root of 312042103 is about 678.2727958151.

Adding to 312042103 its reverse (301240213), we get a palindrome (613282316).

The spelling of 312042103 in words is "three hundred twelve million, forty-two thousand, one hundred three".