21300359 has 2 divisors, whose sum is σ = 21300360. Its totient is φ = 21300358.

The previous prime is 21300343. The next prime is 21300401. The reversal of 21300359 is 95300312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21300359 - 2⁴ = 21300343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21300319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650179 + 10650180.

It is an arithmetic number, because the mean of its divisors is an integer number (10650180).

Almost surely, 2^21300359 is an apocalyptic number.

21300359 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300359 is an equidigital number, since it uses as much as digits as its factorization.

21300359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 21300359 is about 4615.2311968091. The cubic root of 21300359 is about 277.2015415181.

The spelling of 21300359 in words is "twenty-one million, three hundred thousand, three hundred fifty-nine".