3142785871 has 4 divisors (see below), whose sum is σ = 3145221544. Its totient is φ = 3140350200.

The previous prime is 3142785851. The next prime is 3142785881. The reversal of 3142785871 is 1785872413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3142785871 - 2⁷ = 3142785743 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 (3142785851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1215900 + ... + 1218481.

It is an arithmetic number, because the mean of its divisors is an integer number (786305386).

Almost surely, 2^3142785871 is an apocalyptic number.

3142785871 is a deficient number, since it is larger than the sum of its proper divisors (2435673).

3142785871 is a wasteful number, since it uses less digits than its factorization.

3142785871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435672.

The product of its digits is 376320, while the sum is 46.

The square root of 3142785871 is about 56060.5553932531. Note that the first 3 decimals coincide. The cubic root of 3142785871 is about 1464.7772877208. Note that the first 3 decimals are identical.

The spelling of 3142785871 in words is "three billion, one hundred forty-two million, seven hundred eighty-five thousand, eight hundred seventy-one".