20003343 has 4 divisors (see below), whose sum is σ = 26671128. Its totient is φ = 13335560.

The previous prime is 20003317. The next prime is 20003369. The reversal of 20003343 is 34330002.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20003317) and next prime (20003369).

It is a cyclic number.

It is not a de Polignac number, because 20003343 - 2⁹ = 20002831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3333888 + ... + 3333893.

It is an arithmetic number, because the mean of its divisors is an integer number (6667782).

Almost surely, 2^20003343 is an apocalyptic number.

20003343 is a deficient number, since it is larger than the sum of its proper divisors (6667785).

20003343 is an equidigital number, since it uses as much as digits as its factorization.

20003343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667784.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 20003343 is about 4472.5096981449. The cubic root of 20003343 is about 271.4568846471.

Adding to 20003343 its reverse (34330002), we get a palindrome (54333345).

The spelling of 20003343 in words is "twenty million, three thousand, three hundred forty-three".