312146143 has 16 divisors (see below), whose sum is σ = 322191360. Its totient is φ = 302328000.

The previous prime is 312146137. The next prime is 312146183. The reversal of 312146143 is 341641213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312146143 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 (312146113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1634178 + ... + 1634368.

It is an arithmetic number, because the mean of its divisors is an integer number (20136960).

Almost surely, 2^312146143 is an apocalyptic number.

312146143 is a deficient number, since it is larger than the sum of its proper divisors (10045217).

312146143 is a wasteful number, since it uses less digits than its factorization.

312146143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558.

The product of its digits is 1728, while the sum is 25.

The square root of 312146143 is about 17667.6581074007. The cubic root of 312146143 is about 678.3481698962.

Adding to 312146143 its reverse (341641213), we get a palindrome (653787356).

The spelling of 312146143 in words is "three hundred twelve million, one hundred forty-six thousand, one hundred forty-three".