312143055 has 16 divisors (see below), whose sum is σ = 570776064. Its totient is φ = 142693920.

The previous prime is 312143047. The next prime is 312143081. The reversal of 312143055 is 550341213.

It is not a de Polignac number, because 312143055 - 2³ = 312143047 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1486291 + ... + 1486500.

It is an arithmetic number, because the mean of its divisors is an integer number (35673504).

Almost surely, 2^312143055 is an apocalyptic number.

312143055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

312143055 is a deficient number, since it is larger than the sum of its proper divisors (258633009).

312143055 is a wasteful number, since it uses less digits than its factorization.

312143055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972806.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 312143055 is about 17667.5707158624. The cubic root of 312143055 is about 678.3459329674.

Adding to 312143055 its reverse (550341213), we get a palindrome (862484268).

The spelling of 312143055 in words is "three hundred twelve million, one hundred forty-three thousand, fifty-five".