2342320021 has 4 divisors (see below), whose sum is σ = 2343142732. Its totient is φ = 2341497312.

The previous prime is 2342319983. The next prime is 2342320031. The reversal of 2342320021 is 1200232432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1414812996 + 927507025 = 37614^2 + 30455^2 .

It is a cyclic number.

It is not a de Polignac number, because 2342320021 - 2⁷ = 2342319893 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 (2342320031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407070 + ... + 412783.

It is an arithmetic number, because the mean of its divisors is an integer number (585785683).

Almost surely, 2^2342320021 is an apocalyptic number.

It is an amenable number.

2342320021 is a deficient number, since it is larger than the sum of its proper divisors (822711).

2342320021 is an equidigital number, since it uses as much as digits as its factorization.

2342320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822710.

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

The square root of 2342320021 is about 48397.5208146037. The cubic root of 2342320021 is about 1328.0530090628.

Adding to 2342320021 its reverse (1200232432), we get a palindrome (3542552453).

The spelling of 2342320021 in words is "two billion, three hundred forty-two million, three hundred twenty thousand, twenty-one".