2321997 has 4 divisors (see below), whose sum is σ = 3096000. Its totient is φ = 1547996.

The previous prime is 2321989. The next prime is 2321999. The reversal of 2321997 is 7991232.

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 2321997 - 2³ = 2321989 is a prime.

It is a D-number.

2321997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321999) 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, 386997 + ... + 387002.

It is an arithmetic number, because the mean of its divisors is an integer number (774000).

2^2321997 is an apocalyptic number.

It is an amenable number.

2321997 is a deficient number, since it is larger than the sum of its proper divisors (774003).

2321997 is an equidigital number, since it uses as much as digits as its factorization.

2321997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774002.

The product of its digits is 6804, while the sum is 33.

The square root of 2321997 is about 1523.8100275297. The cubic root of 2321997 is about 132.4200918448.

The spelling of 2321997 in words is "two million, three hundred twenty-one thousand, nine hundred ninety-seven".