2321399 has 2 divisors, whose sum is σ = 2321400. Its totient is φ = 2321398.

The previous prime is 2321393. The next prime is 2321443. The reversal of 2321399 is 9931232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2321399 - 2⁴ = 2321383 is a prime.

It is equal to p₁₇₀₉₅₇ and since 2321399 and 170957 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2321393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160699 + 1160700.

It is an arithmetic number, because the mean of its divisors is an integer number (1160700).

2^2321399 is an apocalyptic number.

2321399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321399 is an equidigital number, since it uses as much as digits as its factorization.

2321399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 29.

The square root of 2321399 is about 1523.6137962095. The cubic root of 2321399 is about 132.4087231804.

The spelling of 2321399 in words is "two million, three hundred twenty-one thousand, three hundred ninety-nine".