13020043303 has 4 divisors (see below), whose sum is σ = 13705308760. Its totient is φ = 12334777848.

The previous prime is 13020043243. The next prime is 13020043349. The reversal of 13020043303 is 30334002031.

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

It is a cyclic number.

It is not a de Polignac number, because 13020043303 - 2²⁹ = 12483172391 is a prime.

It is a super-2 number, since 2×13020043303² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 685265437 = 13020043303 / (1 + 3 + 0 + 2 + 0 + 0 + 4 + 3 + 3 + 0 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020043703) 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, 342632700 + ... + 342632737.

It is an arithmetic number, because the mean of its divisors is an integer number (3426327190).

Almost surely, 2^13020043303 is an apocalyptic number.

13020043303 is a deficient number, since it is larger than the sum of its proper divisors (685265457).

13020043303 is an equidigital number, since it uses as much as digits as its factorization.

13020043303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685265456.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 13020043303 its reverse (30334002031), we get a palindrome (43354045334).

The spelling of 13020043303 in words is "thirteen billion, twenty million, forty-three thousand, three hundred three".