19995323 has 2 divisors, whose sum is σ = 19995324. Its totient is φ = 19995322.

The previous prime is 19995307. The next prime is 19995329. The reversal of 19995323 is 32359991.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32359991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19995323 - 2⁴ = 19995307 is a prime.

It is not a weakly prime, because it can be changed into another prime (19995329) 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, 9997661 + 9997662.

It is an arithmetic number, because the mean of its divisors is an integer number (9997662).

Almost surely, 2^19995323 is an apocalyptic number.

19995323 is a deficient number, since it is larger than the sum of its proper divisors (1).

19995323 is an equidigital number, since it uses as much as digits as its factorization.

19995323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65610, while the sum is 41.

The square root of 19995323 is about 4471.6130199292. The cubic root of 19995323 is about 271.4206011246.

The spelling of 19995323 in words is "nineteen million, nine hundred ninety-five thousand, three hundred twenty-three".