312444143 has 12 divisors (see below), whose sum is σ = 343858200. Its totient is φ = 283686480.

The previous prime is 312444127. The next prime is 312444157. The reversal of 312444143 is 341444213.

It is not a de Polignac number, because 312444143 - 2⁴ = 312444127 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 (312444163) 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 11 ways as a sum of consecutive naturals, for example, 186596 + ... + 188262.

It is an arithmetic number, because the mean of its divisors is an integer number (28654850).

Almost surely, 2^312444143 is an apocalyptic number.

312444143 is a deficient number, since it is larger than the sum of its proper divisors (31414057).

312444143 is a wasteful number, since it uses less digits than its factorization.

312444143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238 (or 3227 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 312444143 is about 17676.0895845207. The cubic root of 312444143 is about 678.5639699462.

Adding to 312444143 its reverse (341444213), we get a palindrome (653888356).

The spelling of 312444143 in words is "three hundred twelve million, four hundred forty-four thousand, one hundred forty-three".