2143471 has 4 divisors (see below), whose sum is σ = 2338344. Its totient is φ = 1948600.

The previous prime is 2143469. The next prime is 2143481. The reversal of 2143471 is 1743412.

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 2143471 - 2¹ = 2143469 is a prime.

It is a super-3 number, since 3×2143471³ = 29544326291271828333, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97420 + ... + 97441.

It is an arithmetic number, because the mean of its divisors is an integer number (584586).

2^2143471 is an apocalyptic number.

2143471 is a deficient number, since it is larger than the sum of its proper divisors (194873).

2143471 is a wasteful number, since it uses less digits than its factorization.

2143471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194872.

The product of its digits is 672, while the sum is 22.

The square root of 2143471 is about 1464.0597665396. The cubic root of 2143471 is about 128.9355084966.

Adding to 2143471 its reverse (1743412), we get a palindrome (3886883).

The spelling of 2143471 in words is "two million, one hundred forty-three thousand, four hundred seventy-one".