312171392743 has 16 divisors (see below), whose sum is σ = 361383592960. Its totient is φ = 264115144800.

The previous prime is 312171392699. The next prime is 312171392783. The reversal of 312171392743 is 347293171213.

It is a cyclic number.

It is not a de Polignac number, because 312171392743 - 2⁹ = 312171392231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312171392743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312171392783) 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, 1964653 + ... + 2117593.

It is an arithmetic number, because the mean of its divisors is an integer number (22586474560).

Almost surely, 2^312171392743 is an apocalyptic number.

312171392743 is a deficient number, since it is larger than the sum of its proper divisors (49212200217).

312171392743 is a wasteful number, since it uses less digits than its factorization.

312171392743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156718.

The product of its digits is 190512, while the sum is 43.

The spelling of 312171392743 in words is "three hundred twelve billion, one hundred seventy-one million, three hundred ninety-two thousand, seven hundred forty-three".