2213943 has 4 divisors (see below), whose sum is σ = 2951928. Its totient is φ = 1475960.

The previous prime is 2213933. The next prime is 2213963. The reversal of 2213943 is 3493122.

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 2213943 - 2²¹ = 116791 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213923) 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, 368988 + ... + 368993.

It is an arithmetic number, because the mean of its divisors is an integer number (737982).

2^2213943 is an apocalyptic number.

2213943 is a deficient number, since it is larger than the sum of its proper divisors (737985).

2213943 is an equidigital number, since it uses as much as digits as its factorization.

2213943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737984.

The product of its digits is 1296, while the sum is 24.

The square root of 2213943 is about 1487.9324581445. The cubic root of 2213943 is about 130.3333260655. Note that the first 4 decimals are identical.

The spelling of 2213943 in words is "two million, two hundred thirteen thousand, nine hundred forty-three".