2321805897 has 8 divisors (see below), whose sum is σ = 3439712480. Its totient is φ = 1547870580.

The previous prime is 2321805887. The next prime is 2321805919. The reversal of 2321805897 is 7985081232.

It is a happy number.

It is not a de Polignac number, because 2321805897 - 2⁴ = 2321805881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321805887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42996379 + ... + 42996432.

It is an arithmetic number, because the mean of its divisors is an integer number (429964060).

Almost surely, 2^2321805897 is an apocalyptic number.

2321805897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2321805897 is a deficient number, since it is larger than the sum of its proper divisors (1117906583).

2321805897 is an equidigital number, since it uses as much as digits as its factorization.

2321805897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85992820 (or 85992814 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 2321805897 is about 48185.1211163778. The cubic root of 2321805897 is about 1324.1645897025.

The spelling of 2321805897 in words is "two billion, three hundred twenty-one million, eight hundred five thousand, eight hundred ninety-seven".