2321346021 has 4 divisors (see below), whose sum is σ = 3095128032. Its totient is φ = 1547564012.

The previous prime is 2321346017. The next prime is 2321346023. The reversal of 2321346021 is 1206431232.

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 2321346021 - 2² = 2321346017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2321345982 and 2321346000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321346023) 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, 386891001 + ... + 386891006.

It is an arithmetic number, because the mean of its divisors is an integer number (773782008).

Almost surely, 2^2321346021 is an apocalyptic number.

It is an amenable number.

2321346021 is a deficient number, since it is larger than the sum of its proper divisors (773782011).

2321346021 is an equidigital number, since it uses as much as digits as its factorization.

2321346021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773782010.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 2321346021 is about 48180.3489090729. The cubic root of 2321346021 is about 1324.0771589480.

Adding to 2321346021 its reverse (1206431232), we get a palindrome (3527777253).

The spelling of 2321346021 in words is "two billion, three hundred twenty-one million, three hundred forty-six thousand, twenty-one".