13643303 has 4 divisors (see below), whose sum is σ = 13733808. Its totient is φ = 13552800.

The previous prime is 13643293. The next prime is 13643323. The reversal of 13643303 is 30334631.

13643303 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30334631 = 23 ⋅1318897.

It is a cyclic number.

It is not a de Polignac number, because 13643303 - 2⁶ = 13643239 is a prime.

It is a super-2 number, since 2×13643303² = 372279433499618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45026 + ... + 45327.

It is an arithmetic number, because the mean of its divisors is an integer number (3433452).

Almost surely, 2^13643303 is an apocalyptic number.

13643303 is a deficient number, since it is larger than the sum of its proper divisors (90505).

13643303 is an equidigital number, since it uses as much as digits as its factorization.

13643303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90504.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 13643303 is about 3693.6842041517. The cubic root of 13643303 is about 238.9497101871.

Adding to 13643303 its reverse (30334631), we get a palindrome (43977934).

The spelling of 13643303 in words is "thirteen million, six hundred forty-three thousand, three hundred three".