2343021 has 4 divisors (see below), whose sum is σ = 3124032. Its totient is φ = 1562012.

The previous prime is 2343017. The next prime is 2343031. The reversal of 2343021 is 1203432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2343021 - 2² = 2343017 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 (2343001) 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, 390501 + ... + 390506.

It is an arithmetic number, because the mean of its divisors is an integer number (781008).

2^2343021 is an apocalyptic number.

It is an amenable number.

2343021 is a deficient number, since it is larger than the sum of its proper divisors (781011).

2343021 is an equidigital number, since it uses as much as digits as its factorization.

2343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781010.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2343021 is about 1530.6929803197. The cubic root of 2343021 is about 132.8185476646.

Adding to 2343021 its reverse (1203432), we get a palindrome (3546453).

The spelling of 2343021 in words is "two million, three hundred forty-three thousand, twenty-one".