20199343 has 2 divisors, whose sum is σ = 20199344. Its totient is φ = 20199342.

The previous prime is 20199329. The next prime is 20199397. The reversal of 20199343 is 34399102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20199343 - 2⁹ = 20198831 is a prime.

It is equal to p_1282477 and since 20199343 and 1282477 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 (20199643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10099671 + 10099672.

It is an arithmetic number, because the mean of its divisors is an integer number (10099672).

Almost surely, 2^20199343 is an apocalyptic number.

20199343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20199343 is an equidigital number, since it uses as much as digits as its factorization.

20199343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 20199343 is about 4494.3679199638. The cubic root of 20199343 is about 272.3406154892.

The spelling of 20199343 in words is "twenty million, one hundred ninety-nine thousand, three hundred forty-three".