2340304021 has 4 divisors (see below), whose sum is σ = 2553058944. Its totient is φ = 2127549100.

The previous prime is 2340303961. The next prime is 2340304063. The reversal of 2340304021 is 1204030432.

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 2340304021 - 2¹⁹ = 2339779733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2340304021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340302021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106377445 + ... + 106377466.

It is an arithmetic number, because the mean of its divisors is an integer number (638264736).

Almost surely, 2^2340304021 is an apocalyptic number.

It is an amenable number.

2340304021 is a deficient number, since it is larger than the sum of its proper divisors (212754923).

2340304021 is a wasteful number, since it uses less digits than its factorization.

2340304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212754922.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2340304021 is about 48376.6888180661. The cubic root of 2340304021 is about 1327.6718878767.

Adding to 2340304021 its reverse (1204030432), we get a palindrome (3544334453).

It can be divided in two parts, 23403040 and 21, that added together give a triangular number (23403061 = T₆₈₄₁).

The spelling of 2340304021 in words is "two billion, three hundred forty million, three hundred four thousand, twenty-one".