21832303 has 2 divisors, whose sum is σ = 21832304. Its totient is φ = 21832302.

The previous prime is 21832297. The next prime is 21832337. The reversal of 21832303 is 30323812.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21832303 - 2⁵ = 21832271 is a prime.

It is a super-4 number, since 4×21832303⁴ (a number of 30 digits) contains 4444 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21832103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10916151 + 10916152.

It is an arithmetic number, because the mean of its divisors is an integer number (10916152).

Almost surely, 2^21832303 is an apocalyptic number.

21832303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21832303 is an equidigital number, since it uses as much as digits as its factorization.

21832303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 21832303 is about 4672.5050026725. The cubic root of 21832303 is about 279.4901563882.

The spelling of 21832303 in words is "twenty-one million, eight hundred thirty-two thousand, three hundred three".