312142143 has 8 divisors (see below), whose sum is σ = 426340656. Its totient is φ = 203019200.

The previous prime is 312142141. The next prime is 312142157. The reversal of 312142143 is 341241213.

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 312142143 - 2¹ = 312142141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312142141) 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 7 ways as a sum of consecutive naturals, for example, 1268748 + ... + 1268993.

It is an arithmetic number, because the mean of its divisors is an integer number (53292582).

Almost surely, 2^312142143 is an apocalyptic number.

312142143 is a deficient number, since it is larger than the sum of its proper divisors (114198513).

312142143 is a wasteful number, since it uses less digits than its factorization.

312142143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537785.

The product of its digits is 576, while the sum is 21.

The square root of 312142143 is about 17667.5449058436. The cubic root of 312142143 is about 678.3452723173.

Adding to 312142143 its reverse (341241213), we get a palindrome (653383356).

The spelling of 312142143 in words is "three hundred twelve million, one hundred forty-two thousand, one hundred forty-three".