2171376143 has 4 divisors (see below), whose sum is σ = 2173069848. Its totient is φ = 2169682440.

The previous prime is 2171376127. The next prime is 2171376149. The reversal of 2171376143 is 3416731712.

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 2171376143 - 2⁴ = 2171376127 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 (2171376149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844928 + ... + 847493.

It is an arithmetic number, because the mean of its divisors is an integer number (543267462).

Almost surely, 2^2171376143 is an apocalyptic number.

2171376143 is a deficient number, since it is larger than the sum of its proper divisors (1693705).

2171376143 is a wasteful number, since it uses less digits than its factorization.

2171376143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693704.

The product of its digits is 21168, while the sum is 35.

The square root of 2171376143 is about 46598.0272436506. The cubic root of 2171376143 is about 1294.9262079865.

The spelling of 2171376143 in words is "two billion, one hundred seventy-one million, three hundred seventy-six thousand, one hundred forty-three".