2133671 has 4 divisors (see below), whose sum is σ = 2136744. Its totient is φ = 2130600.

The previous prime is 2133647. The next prime is 2133673. The reversal of 2133671 is 1763312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2133671 - 2¹⁴ = 2117287 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 (2133673) 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, 56 + ... + 2066.

It is an arithmetic number, because the mean of its divisors is an integer number (534186).

2^2133671 is an apocalyptic number.

2133671 is a deficient number, since it is larger than the sum of its proper divisors (3073).

2133671 is a wasteful number, since it uses less digits than its factorization.

2133671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072.

The product of its digits is 756, while the sum is 23.

The square root of 2133671 is about 1460.7090743882. The cubic root of 2133671 is about 128.7387095387.

Adding to 2133671 its reverse (1763312), we get a palindrome (3896983).

The spelling of 2133671 in words is "two million, one hundred thirty-three thousand, six hundred seventy-one".